Question

The length of the rectangle is 24 cm and the breadth of the rectangle is 26cm. then find the perimeter of the rectangle?

Answer 1

Length of rectangle (l) is 24 cm.
Length of diagonal (d) is 30 cm.

Let the length of breadth be b.
Write the formula to calculate the diagonal of rectangle.
d=
b
2
+h
2

​
(1)

Substitute the values in equation (1).
30
b
2
+(24)
2

​


Solve for b.
b
2
=900−576
b
2
=324
b=±18

Since, the breath cannot be negative. So, neglect the negative value of breadth. Hence, the breadth of the rectangle is 18 cm.

Write the formula to calculate perimeter of rectangle.
P=2(l+b) (2)

Substitute the values in equation (2).
P=2(24+18)
=2(42)
=84

Thus, the perimeter of rectangle is 84 cm.

Answer 2

Answer :- 100

Length of rectangle :- 24 cm

Breath of rectangle :- 26 cm

Perimeter of rectangle :- 2× ( length + breath )

= 2×(24+26)

= 2× 50

= 100 cm