merporlando merporlando

12-07-2017
Mathematics

contestada

The great circle of a hemisphere has a circumference of 22π square meters. What is the radius of the hemisphere?

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CrisisOnCats CrisisOnCats

12-07-2017

Let's assume π is 3.14.
22 * 3.14 ≈ 69.08
Circumference = π*diameter
69.08÷3.14
22 is the diameter.
Diameter / 2 = radius
Radius ≈ 11 square meters

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apologiabiology apologiabiology

12-07-2017

I think the great circle is the bottom circle thing where it got cut off
so c=2pir
so given
c=22pi

22pi=2pir
divide both sides by pi
22=2r
divide both sides by 2
11=r
the radius is 11 meters

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