Question

If Length is 15 cm, breadth is 8 cm. Find the perimeter of the rectangle.

Answer 1

Hint: The perimeter of a rectangle is defined as the sum of all the sides of a rectangle.
Since the perimeter is equal to the sum of all the sides of the polygon. Hence, in the case of a rectangle, the perimeter (P) is;
P = sum of all its four sides
\[P = l + b + l + b\] (Opposite sides of rectangle are equal)
\[P = 2(l + b)\]
Now, substituting the values we get the required perimeter.

Complete step-by-step solution:
It is given that; lengths \[ = 15\] cm, breadth \[ = 8\] cm
We have to find the perimeter of the rectangle.
We know that, if the length and breadth of a rectangle is \[l\] and \[b\] respectively, the perimeter of the rectangle is \[2(l + b)\] cm
Substitute the values we get,
The perimeter is \[2(15 + 8)\] cm
Simplifying we get,
The perimeter is \[46\] cm.

Hence, the perimeter of the rectangle is \[46\] cm.

Note: We have to remember that, in geometry, perimeter can be defined as the path or the boundary that surrounds a shape. It can also be defined as the length of the outline of a shape.
Perimeter is the total length of the sides of a two dimensional shape.
We use a ruler to measure the length of the sides of a small regular shape. The perimeter is determined by adding the lengths of the sides/edges of the shape.
In case of a rectangle, the opposite sides of a rectangle are equal and so, the perimeter will be twice the width of the rectangle plus twice the length of the rectangle and it is denoted by the alphabet “p”.