Question

two sphere are in the ratio of 3:5
what is the ratio of their surface area

Answer 1

Answer:

9:25

Step-by-step explanation:

Sphere 1

radius = 3x

Sphere 2

radius = 5x

Total Surface Area of

Sphere1 = $4\pi r^{2}$ = $\frac{792x^{2} }{7}$

And

sphere2 = $4\pi r^{2}$ = $\frac{2200x^{2} }{7}$

ratio =  $\frac{792x^{2} }{7}$ ÷ $\frac{2200x^{2} }{7}$

= 9:25