Question

The area of a rectangle of breadth 3 cm, is equal to the area of a square
of side 9 cm. Then perimeter of the rectangle is
(a) 56 cm (b) 60 cm (c) 63 cm
(d) 65 cm​

Answer 1

Answer:

Side of square = 9 cm

Area of square = side ²

= 9²

= 81 cm²

Area of square = Area of rectangle

Area of rectangle = 81 cm²

Breadth of rectangle = 3cm

Area of rectangle = length × breadth

81 = 3 × b

b = 81/3

b = 27

Therefore , breadth = 27 cm

Perimeter of rectangle = 2×(l+b)

= 2×(27+3)

= 2×30

= 60 cm

Hope it helps you

Answer 2

Step-by-step explanation:

first-

area of rectangle=area of square

l×b= s× s

l×3=9×9

l×3=81

so,

l=81÷3

l=27

here we get the measure of length.

perimeter of rectangle

2× (l+b)

2×(27+3)

2×30

60 so the correct option is b) 60 cm