Question

The length of a rectangle is twice its breath. if its perimeter is 30 cm. find the area of rectangle

Answer 1

Answer:

Area = 50cm^2

Step-by-step explanation:

Given that length is twice of breath

let breadth be x

then length will be 2x

Perimeter of rectangle = 2(l+b)

30cm = 2(2x+x)

30cm = 2(3x)

30cm = 6x

x = 30/6

x = 5cm

The breadth of the rectangle is 5cm

The length of the rectangle is twice its breadth

Therefore length = 2*5 = 10cm

Therefore length = 10cm and breadth = 5cm

Area of rectangle = lb

Area of rectangle = 10*5

Area of rectangle = 50cm^2