Find the surface area of a sphere of radius 14 cm.
Given,
Radius of sphere (r) = 14 cm
By formula,
Surface area of the sphere (A) = 4πr2
Substituting values we get :
A=4×227×(14)2=4×227×14×14=4×227×196=4×22×28=2464 cm2.A = 4 \times \dfrac{22}{7} \times (14)^2 \\[1em] = 4 \times \dfrac{22}{7} \times 14 \times 14 \\[1em] = 4 \times \dfrac{22}{7} \times 196 \\[1em] = 4 \times 22 \times 28 \\[1em] = 2464 \text{ cm}^2.A=4×722×(14)2=4×722×14×14=4×722×196=4×22×28=2464 cm2.
Hence, surface area of sphere = 2464 cm2.
