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A hemispherical bowl |
2019-04-29 |
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From Innocent:
Abc is the section through a hemispherical bowl centre O radius 15cm. It contains water whose maximum depth is 8cm. What is the width of the water surface?
Answered by Penny Nom. |
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A circle inscribed in a triangle |
2019-04-28 |
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From Daksh:
O is the centre of the inscribed circle in a 30°-60°-90° triangle ABC right angled at C.
If the circle is tangent to AB at D then the angle COD is-
Answered by Penny Nom. |
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A dot on a child's car wheel |
2019-04-28 |
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From julia:
A wheel of a child’s car revolves at 10 rpm. A painted dot on the circumference of the wheel is 12 cm from the centre of rotation of the wheel. How far does the dot travel in 5 s, to one decimal place?
Answered by Penny Nom. |
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The length of an arc |
2019-04-28 |
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From Patrick:
If an arch is 48 inches wide at the base and 30 inches tall at its apex, what is the length of the arch?
Answered by Penny Nom. |
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A thread around a cylinder |
2019-04-28 |
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From Ally:
A cylinder has a diameter of 3.5 cm. How many times will a thread 143mm go round the cylinder?
Answered by Penny Nom. |
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Two linear equations with a fraction |
2019-04-26 |
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From Asha:
2x=-3y …1
x-2+-4/3(y+1) ...2
note: … is equation
Answered by Harley Weston. |
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Constructing a hexagonal pyramid |
2019-04-25 |
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From REBECCA:
I'm doing a project for my Honors Geometry class and I have to build a regular hexagonal pyramid. I was given the volume of .75 gallons, but I don't know how to figure everything else out. Please help?
Thanks,
Rebecca
Answered by Harley Weston. |
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Three friend's ages |
2019-04-25 |
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From Lemicio:
Janet is 10 years older than Karin, who is twice the age of Josef. If their combine age is 55, how old is each one now?
Answered by Penny Nom. |
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80% of an item is $200.00 80% of an item is $200.00 |
2019-04-25 |
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From kayla:
if 80% of a item is $200.00 what is the original price
Answered by Penny Nom. |
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Is every rectangle a rhombus? |
2019-04-25 |
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From Danny:
Is a rectangle a rhombus??? True or False
Answered by Penny Nom. |
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The area of a triangle |
2019-04-25 |
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From troy:
The base and the height of a right triangle are represented by the expressions below.
The area of the triangle is 28 square units. Find the lengths of the base and the height
of the triangle
base= x+4
height=x-6
Answered by Penny Nom. |
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(3d) Whether line segment intersects triangle |
2019-04-13 |
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From rj:
Well hello,
Lets say I have a triangle,
Not any ordinary triangle, but a triangle that is represented in 3 dimensions. I also have a line segment.
Lets say that this triangle has points A(0,0,0), B(1,0,0), C(0,1,1)
And the line segment has points D(0,1/2,0), E(1,1/2,1)
In what way can I find if the line segment and triangle intersect? Their intersection point?
I don't prefer matrices, because they don't make any sense, but ... if that's the only way to solve this, then do what's necessary.
Thank you in advance.
Answered by Penny Nom. |
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An equilateral triangle |
2019-04-10 |
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From ethan:
In equilateral triangle RST, R has coordinates (0, 0) and T has coordinates of (2a, 0). Find the coordinates of S in terms of a.
Answered by Penny Nom. |
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More on dominoes |
2019-04-09 |
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From B:
A previous answer
(http://mathcentral.uregina.ca/QQ/database/QQ.09.00/mark2.html)
considered a method to make a line of all 28 dominoes.
Since there are an even number of each value, such a solution can be put into a circle.
Aside from the choice of starting tile, is the solution unique?
Answered by Penny Nom. |
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The area of a lot |
2019-04-06 |
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From Robert:
Can you help me determine the rough square footage of this lot please(attached)? I think it is nearly 7000 square feet. I am sure I need the degrees of of the corners but I don’t have that. An estimate would be all I need.
Thank you for you help.
Rob
Answered by Harley Weston. |
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