The radius is 5cm
Step-by-step explanation:
The surface area of a sphere is given by:

Here
Given
SA = 100π cm^2
Putting the values in the formula

Taking square root on both sides

The radius is 5cm
Keywords: Surface area, Radius
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I think it is 2.6 seconds
Answer:
1st angle will 60degree =90-60,. 1nd angle =60 degree.vertically opposite angle,
Answer:
4
Step-by-step explanation:
both sides are multiplied by 2 which means its the original area*2*2 which means it's the original area*4