Question

perimeter and area class7​

Answer 1

Answer:

Q 1- perimeter of area = 80m. perimeter of square = 4 × side. side = perimeter/4 = 80/4 = 20m. Area of square = side × side = 20 × 20 = 400 sq.

Q 2- Let length=l, breadth=b of rectangle

⇒ Perimeter=2(l+b)

⇒100=2(35+b)

⇒50=35+b

⇒b=15cm

Area=lb=35×15=525cm

2