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Form a cone from a circle sector |
2018-08-12 |
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From Tinashe:
A 216 sector of a circle of radius 5cm is bent to form a cone. Find the radius of the base of the cone and its vertical angle.
Answered by Penny Nom. |
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5 mm of water over 1 hectare |
2018-08-10 |
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From Joyce:
Please help me with this question.
How many tonnes of water fell on 1 hectare of land during a rainfall of 5mm?
Answered by Penny Nom. |
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Truncated cones |
2018-08-08 |
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From Belgacem:
Hello, I have a truncated cone: height 500mm , Base radius=147mm and I want to calculate the Top surface radius. How to do that? thank you
Answered by Penny Nom. |
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Paving stones area |
2018-08-08 |
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From Declan:
I am thinking of buying some reclaimed block paving stones. There are 750 pieces in total.
60% are L- 140mm x W -140mm x H-50mm
40% are L-170mm x W-140mm x H-50mm
How much area will this cover?
Answered by Penny Nom. |
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The record for a soccer team |
2018-07-20 |
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From Payal:
A soccer team plays six games in one month. Each game results in a win, loss, or tie.
For this soccer team, how many different sets of results are possible for the six games?
Answered by Penny Nom. |
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How many students passed the test? |
2018-07-20 |
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From florian:
In Mr. Edgecomb's math class, 30 students took an exam on statistics. If the average passing grade was 84, the average failing grade was 60, and the overall average was 80, how many students passed the test?
Answered by Penny Nom. |
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Linear feet and cubic feet |
2018-07-16 |
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From Dave:
How do I convert: 1 foot wide x 15 inches high x 19 inches deep
We are trying to figure out how to convert the linear footage into cubic footage
the above are the figures represent just 1 linear feet of several thousand
Any thing helps,
Thanks in advance
Dave
Answered by Penny Nom. |
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A sulphuric acid solution |
2018-07-12 |
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From Tan:
How much 96% h2so4 to add into sulphuric acid 30% in order to make it to 50% sulphuric acid?
Answered by Penny Nom. |
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A circle inscribed in a regular polygon |
2018-07-12 |
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From Naveen:
The radius of inscribed circle for n sided regular polygon of a side a is?
Please with proof
Answered by Penny Nom. |
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The price of a watermelon |
2018-07-07 |
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From errin:
the price of the watermelon is directly proportional to its weight. If a watermelon that weighs 22 pounds cost $5.40, how much will a 17.5 pound watermelon cost?
Answered by Penny Nom. |
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Four odd factors |
2018-07-04 |
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From Manchali:
Find a number that has 4 factors and all of them are odd numbers.
Answered by Penny Nom. |
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The surface area of a levee |
2018-07-04 |
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From John:
Figuring out the surface area in sq. Ft. Of a levee
Height:10’
Top of levee width: 6’
Width of base (from toe to toe): 40’
Length of levee: 1,250’
Answered by Penny Nom. |
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Creating a number sentence |
2018-06-29 |
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From trish:
First I have to solve the problem. Then write a number sentence for the problem.
The problem: By installing a $120.00 thermostat that reduces the temperature setting at night a family hopes to cut its annual fuel bill for heating oil by 8%, and recover the cost of the thermostat in fuel savings after 2years. What was the family's annual fuel bill before installing the thermostat?
Thanks can't figure this one out!
Answered by Penny Nom. |
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Soil in a raised bed |
2018-06-24 |
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From Georgia:
Good Afternoon,
I'm planning on building a raised bed garden measuring
6 feet long x 4 feet wide x 12 inches deep.
I'm not sure how to calculate the amount of soil to fill it up. I will have to
purchase the soil in 2 cubic feet bags.
I've read several articles about this topic on various gardening websites,
and one of them stated it would take a ton of soil to fill up an 8 foot long x
4 foot wide x 12 inch deep raised bed garden.
I'd greatly appreciate it if you could help me out with this quandary.
Thank you for your prompt and courteous response.
Kind Regards,
Georgia
Answered by Penny Nom. |
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Three consecutive whole numbers |
2018-06-22 |
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From whaha:
the sum of three consecutive whole numbers divided by 4 is equal to 6. find the numbers.
Answered by Penny Nom. |
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