The area of a rectangular field is 252 sq. cm. The length is 21 cm, then perimeter is?
Answer & explanation
Correct answer: option 3
Area of the rectangle = l × b
⇒ 252 = 21 × b
⇒ b = 12 cm
perimeter = 2 (l + b)
= 2(21 + 12 ) = 66 cm
The area of a rectangular field is 252 sq. cm. The length is 21 cm, then perimeter is?
Correct answer: option 3
Area of the rectangle = l × b
⇒ 252 = 21 × b
⇒ b = 12 cm
perimeter = 2 (l + b)
= 2(21 + 12 ) = 66 cm