The wooden box measure 20 cm by 12 cm by 10 cm. Thickness of wood is 1 cm. The volume of wood to make the box (in cubic cm) is 

The volume of a cube is $$ 512{cm}^{3}$$. Its surface area (in sq cm) is 

The area of square field is $$ ({69696})^{2}$$. Its diagonal will be equal to (use √2 = 1.414) 

The perimeter of two squares are 40 cm and 32 cm. The perimeter of a third square whose area is the difference of the area of two square, is 

If the compound interest on a certain sum for two consecutive years is Rs.220 and Rs.242, then the rate of interest per annum is 

The difference between the simple interest and the compound interest (compounded annually) at the rate of 12% per annum on Rs.5000 for 2 years will be 

A sum of Rs.1600 gives a simple interest of Rs.252 in 2 years and 3 months. The rate of interest per annum is 

In what time will the simple interest be $$ {2\over5} $$ of the principal at 8% per annum?