Question

if the surface area of a sphere is 616 cm, then find its radius

Answer 1

Solution :

Let the radius of the sphere = r cm

Surface area of the sphere = 616 cm²

4πr² = 616 cm²

=> 4 × ( 22/7 ) r² = 616

=> r² = ( 616 × 7 )/( 22 × 4 )

=> r² = ( 7 × 7 )

r = √ 7 ×✓7

r = 7 cm

Therefore ,

Radius of the Sphere = r = 7 cm

••••

Answer 2

HEY MATE

UR ANSWER IS

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GIVEN

Surface area of sphere =  616 cm²

Radius of sphere = ?????

we use this formula =

Surface area of the sphere  = 4 π r²

616 = 4 (22/7) r²

616 = (12.57) r²

r² = 616 / 12.57

r² = 49

r = √49

r = 7 cm

answer is 7 cm

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