Simplify: √[( 12.1)2 − (8.1)2] / [(0.25)2 + (0.25)(19.95)]

If √15=3.88, find the nearest value of √(5/3)

Find the least square number which is exactly divisible by 10,12,15 and 18.

By what least number 4320 be multiplied to obtain a number which is a perfect cube?

What is the square root of 0.0009?

Find the value of √25/16.

If a*b*c=√(a+2)(b+3)/(c+1),find the value of 6*15*3.

Evaluate: √248+√51+√169