Question 283246
I need to write the answer in the exact, simplified form:  What is the perimeter of a rectangle with a length of 3 times the square root of 5 and a width of 4 times the square root of 10? 

Length = 3sqrt5 

width = 4sqrt10

Perimeter = 2(3sqrt5 +4sqrt10)

=6sqrt5+8sqrt10

(8sqrt10= 8sqrt2*5 = 8*sqrt2*sqrt5)

=6sqrt5 +8sqrt2*sqrt5

=2sqrt5(3+4sqrt2)