Question

f) Find the radius of a Sphere whose surface area is 154 cms​

Answer 1

Answer:

Refer to the attachment above

Answer 2

Answer: r = 3.5 cm

Step-by-step explanation:

Let r be the radius of the sphere.

Surface area = 4πr²

154 cm² = 4πr²

154 cm² = 4 × 22/7 × r²

154 × 7/22 × 4 cm² = r²

r² = 12.25

Taking square roots, we get

r = 3.5

Thus, the radius of a sphere is 3.5 cm