Question:
Two cubes have their volumes in the ratio 1:27 Find the ratio of their surface areas
A1:9
B9:1
C27:1
D3:9
Answer:
A. 1:9
Explanation:
If the ratio of volume of two cubes is l: 27 ie a1³:a2³ =1:27 a1:a2 = 1:3 Surface area = a1²:a2² = 1²:3² = 1:9