Q114 of 142 Page 88

What will be the number of unit squares on each side of a square graph paper if the total number of unit squares is 256?

Given:

Let the number is y.

Then the number of unit square = y × y = y²

But total number of unit squares = 256

⇒ y² = 256

Then y = = 16

Hence, the number of unit squares = 16

112

Find the decimal fraction which when multiplied by itself gives 84.64.

113

A farmer wants to plough his square field of side 150m. How much area will he have to plough?

115

If one side of a cube is 15 m in length, find its volume.

116

The dimensions of a rectangular field are 80 m and 18 m. Find the length of its diagonal.