Question

6. Find the radius of a sphere whose surface area is 154 cm?​

Answer 1

Answer:

Surface area of sphere=154cm²

=4πr²=154cm²

=4×(22/7)r²=154cm²

=r²=(154×7)/(4×22)

=r²=12.25

=r=√12.25

=r=3.5cm

Correct me if I'm wrong.