Area and Perimeter | MCQs

Explanation

Given:

Original length = 15 cm

Original area = 150 cm²

Original width = Area / Length

= 150 / 15

= 10 cm

New area = 1 1/3 times the original area

= 4/3 × 150

= 200 cm²

New length = New area / Width

= 200 / 10

= 20 cm

New perimeter = 2(Length + Width)

= 2(20 + 10)

= 2 × 30

= 60 cm