Question

Tell me no 15. Please

Answer 1

Answer:

Breadth = 18

length = 24

Answer 2

Answer :

Breadth of rectangle be x

Length of rectangle be x + 6

Perimeter = 84 cms

Perimeter = 2(l + b). ..... Formula

84 = 2{x + (x + 6)}

84 = 2{2x+6}

42 = 2x + 6

2x = 42 - 6

x = $\dfrac{42\: - \: 6}{2}$

x = $\dfrac{36}{2}$

x = 18 cm

Breadth = x = 18 cm

Length = (x + 6) = (18 + 6) = 24 cm

Area of rectangle

Area of rectangle ABCD = l × b

= 24 × 18

= 432 cm²

So,

Area of rectangle = 432 cm²

Length = 24 cm

Breadth = 18 cm