Question

What is the surface area of a igloo with a 20 ft. diameter

Answer 1

The surface area of a igloo with a 20 ft. diameter is $628ft^{2}$

According to question statement, we are supposed to find the surface area of an igloo with a 20ft. diameter.

Before solving this question, we should be aware of the fact that an igloo is of a Hemispherical shaped object usually made up of ice.

So for finding out area of igloo we find the surface area of of the hemisphere.

Curved Surface area : $2\pi r^{2}$

Total Surface area: $3\pi r^{2}$

where r is the radius of igloo.

Radius is half of the diameter therefore $r=\frac{diameter}{2}$

$r=\frac{20ft}{2} \\r=10ft$

Therefore radius is 10 ft.

Curved Surface Area: $2*3.14*10^{2} =628ft^{2}$

Total Surface Area: $3*3.14*10^{2} =942ft^{2}$

But as we are supposed to find the surface area therefore the answer is $628ft^{2}$.

• Hemisphere: A hemisphere is a 3-Dimensional figure which is obtained by bisecting a sphere into two equal halves through its diameter.

If you want to learn more about surface areas, click on the link given below:

brainly.com/question/15889753

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