Help solve this math problem please.

Mathematics
Tutor: None Selected Time limit: 1 Day

A cube has a surface area of 216 square cm. A second cube has edges that are 3  times as long. How much greater is the surface area of the second cube than the first cube?

May 12th, 2015

since the cube has six sides, each side has a surface area of 216 / 6 = 36  which means each edge is the square root of 36 which is 6cm

The second cube has edges 3 times as long which means 6x3 = 18 cm

That means each face has an area of 18^2 = 324

And the total surface area is 324x6 = 1944 square cm

1944 / 216 = 9  which means the second cube has a surface area NINE TIMES greater than the first.

May 12th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
May 12th, 2015
...
May 12th, 2015
Dec 7th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer