Question

Two cubes have their volumes in the ratio 1:27 Find the ratio of their surface areas

• A. 1:9
• B. 9:1
• C. 27:1
• D. 3:9

Answer 1

Answer:

A. 1:9

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