Question

Find the area of a rectangular object which has a length of 5√8 inches and a width of 2√5 inches. Would the answer be 4√10 or 20√10?

Answer 1

Area = Length * Width

A = LW

A = 5√8 * 2√5

A = (5*2)*(√8*√5)

A = 10√(8*5)

A = 10√(4*2*5)

A = 10√4*√(2*5)

A = 10*2*√(2*5)

A = 20√10


So your second choice is correct.