Tamil Nadu Board Solutions for Chapter: Perimeter And Area, Exercise 8: Exercise 3.2

A piece of wire is $36 \mathrm{cm}$ long. If the length of each side is $k \mathrm{cm}$, then the value of $k$, if we form an equilateral triangle.

From one vertex of an equilateral triangle with side $40 \mathrm{cm},$ an equilateral triangle with $6 \mathrm{cm}$ side is removed. If the perimeter of the remaining portion is $\mathrm{P} \mathrm{cm}$, then find the value of $\mathrm{P}$?

Rahim and Peter go for a morning walk, Rahim walks around a square path of side $50 \mathrm{m}$ and Peter walks around a rectangular path with length $40 \mathrm{m}$ and breadth $30 \mathrm{m}$. If both of them walk $2$ rounds each, who covers more distance and by how much ?

The length of a rectangular park is $14 \mathrm{m}$ more than its breadth. If the perimeter of the park is $200 \mathrm{m},$ what is its length? Find the area of the park ?

The length of a rectangle is three times its breadth. If its perimeter is $64 \mathrm{cm}$, then find the sides of the rectangle.

How many different rectangles can be made with a $48 \mathrm{cm}$ long string? Find the possible pairs of length and breadth of the rectangles.

Draw a square $\mathrm{B}$ whose side is twice of the square $\mathrm{A}$. Calculate the perimeters of the squares $A$ and $B$.

Two plots have the same perimeter. One is a square of side $10 \mathrm{m}$ and another is a rectangle of breadth $8 \mathrm{m}$. Which plot has the greater area and by how much?