Question

Two spheres have volumes in ratio 1728/2197 if the area of small sphere is 3024 cm² find area of bigger sphere

Answer 1

v1:v2 = 1728:2197
4/3×22/7×r^3 :4/3×22/7×R^3 =1728:2197

r^3÷R^3=1728÷2197
r:R=12:13

area of small sphere :area of big sphere = 3024:x

4×22/7 ×r^2 :4×22/7 ×R^2 =3024:x
r^2:R^2 =3024:x
12^2:13^2 =3024:x
144:169=3024:x
x=3024×169÷144
x=511056÷144
x=3549 cm ^2

area of big sphere =3549 cm ^2

Answer 2

Answer:

Step-by-step explanation:15-28x=36

15-36=28x

21=28x

21÷28=x

3/4=x