Question

Find the ratio of the surfaces of the inscribed and circumscribed spheres about a cube.
A) 1:2
B) 1;3
C) 1:4
D) 1:5

Answer 1

Find the ratio of the surfaces of the inscribed and circumscribed spheres about a cube.
A) 1:2
B) 1;3
C) 1:4
D) 1:5

Answer:   A) 1:2 

SOLUTION

 4×3.14×r2 : 4×3.14×(r√)2
 = 1 : 2

Answer 2

Question -: Find the ratio of the surfaces of the inscribed and circumscribed spheres about a cube.
A) 1:2
B) 1;3
C) 1:4
D) 1:5


Answer:   A) 1:2 

SOLUTION-:

 4×3.14×r² : 4×3.14×(√r)²

  = 1 : 2