Question

Find the perimeter of a rectangle whose length is 4√5 and width is 3√7

Answer 1

if you don't have a calculator you can just put the number under the radical like this

Explanation:

4 * 3 *
`√(5 * 7)`

12
`√(35)`

this answer might be what a teacher is looking for.. b/c it's exact but... if you were needing to do real work.. you'll just need a close approximation, then

12* 5.916....

70.99 is a close approximation