Question

Find the value of square root of 312 + square root of 135 + square root of 81.

Answer 1

Explanation:

no calculator ?

sqrt(312) + sqrt(135) + sqrt(81) =

= sqrt(4×78) + sqrt(9×15) + 9 = 2×sqrt(78) + 3×sqrt(15) + 9 =

= 38.28247177...