Question

Find the primeter and area of the following rectangles: length = 12 cm, breadth = 8 cm length 20 m, breadth 15 m​

Answer 1

Answer:

Step-by-step explanation:

Given, l=12 cm

b=8 cm

We know that

Perimeter of rectangle =2(l+b)

=2×(12+8)

=40cm

Hence,

perimeter of the triangle is 40cm.

Answer 2

Answer:

1. perimeter= 40cm, Area= 96 cm²

2. perimeter= 70 cm, Area= 300 cm²

Step by step we explanation:

1.

perimeter of rectangle = 2( L+B )

= 2 x ( 12+8)

= 2 x (20)

= 40 cm

Area of rectangle = L x B

= 12 x 8

= 96 cm²

2.

perimeter = 2(L+B)

= 2 (20+15)

= 2 (35)

= 70 m

Area = LxB

= 20x15

= 300 m²