Q112 of 142 Page 88

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

Given:

Let the number is y

Acc. To condition:

y × y = 84.64

⇒ y² = 84.64

Hence, required number is 9.2

110

Find the length of the side of a square if the length of its diagonal is 10 cm.

111

A decimal number is multiplied by itself. If the product is 51.84. find the number.

113

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

114

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?