Question

The area of a rectangle is 42 sq. cm and its length is 7 cm. Find its perimeter.

• A. 22 cm
• B. 21 cm
• C. 26 cm
• D. 24 cm

Answer 1

Answer:

C. 26 cm

Given

Area of rectangle = 42 sq.cm

Length of the rectangle = 7 cm

Formula used:

Area of rectangle =$l\times{b}$

Perimeter of rectangle $=2\times{(l + b)}$

Here, l is length and b is breadth

Calculation:

Let the breadth be x cm

Area = $7\times{x} = 42$

$⇒ x = 6 cm$

$Perimeter = 2\times{(l + b)} = 2\times{(7 + 6)} = 26 cm$

∴ Perimeter is 26 cm