Jharne De Solutions for Chapter: Perimeter and Area, Exercise 4: Worksheet

Find the missing length (m) and perimeter for each figure.

Find the missing length (m) and perimeter for each figure.

Find the lengths (m) of the unknown side, then calculate the perimeter of each figure.

Find the lengths (m) of the unknown side, then calculate the perimeter of each figure.

A floor is $18$ m long and $12$ m wide. A square carpet with the side measuring $14$ m is laid on the floor.

What is the area of the floor that is not carpeted? Write answer in $m^2$.

A rectangular plot and a square plot have the same perimeter. The length of the rectangle is $20$ cm and the breadth is $16$ cm. Find the area of the square in $c{m}^2$.

The length and breadth of a rectangular plot are in the ratio of $9 : 5$ and its perimeter is $504$ cm. Find the area of the rectangular plot.

The perimeter of a square lawn is $144 \mathrm{cm}$. Find the cost of mowing the lawn at the rate of $₹10$ per square metre. (Answer is $₹$_____)