Question

find the radius of the sphere whose surface area is 164 cm².​

Answer 1

Here,

surface area of sphere= 164 cm²

We know that,

Surface area of sphere=4πr²

164 = 4× 22/7×r²

164×7/4×22 =r²

1148/4×22 = r²

287/22 = r²

13.05 = r²

Taking square root on both sides,

r = √13.05 cm