Question

The radii of two hemispheres are in the ratio 1: 4. Compare their LSA

Answer 1

on comparing the ratio of LSA of two hemispheres is 1:16
hope it helps....

Answer 2

Answer

Radius are of both hemispheres are in ratio of 1:4

L.s.a of hemisphere is 2πr^2

2πr^2=2πR^2

Cancelled 2π

Let taker=1andR=4

(1)^2=(4)^2

1=16

1/16 is the ratio of L.S.A of two hemispheres