Question

Practice Exercise 15.1
1. Which will have a greater area-a rectangle with length and breadth 40 m and
28 m, respectively, or a square of side 35 m? Also compare their perimeters
The perimeter of a rectangle of sides 35 cm and 24 cm is equal to the perimeter​

Answer 1

Answer:

Area of rectangle=L×B

= 40×28=1120

Area of square=Side×Side

=35×35=1225

The area of square will be greator.

Perimeter of rectangle=L+B×2

=35+24×2=59×2=118

Answer 2

Area of rectangle:

l x b

= 40 x 28 = 1120 m

Area of square:

l x l

35 x 35 = 1225 sq.m

Rectangle < Square

Ans: The square has more area.

Perimeter of rectangle:

2 (l+b)

= 2( 40+28 )

= 2 x 68

= 136 m

Perimeter of square:

l x 4

= 34 x 4

140 m

Rectangle < Square

Ans: The square has a bigger perimeter.