Question

Assignment - 15.1
1. Mitali runs around a square field of side 70 metres and Noori runs around a
rectangular field of length 80 metres and breadth 50 metres.
If both of them go around twice, then the difference between the distance
A (B)
D
covered by Mitali and Noori is
(B) 20 m
(C) 40 m
(D) 60 m
(A) 80 m​

Answer 1

Answer:

(c) 40 m

Step-by-step explanation:

• perimeter of a square = 4 × side
• perimeter of a rectangle = 2( l + b)

total length of field does Mitali runs = 70× 4

• = 280
• Mitali runs twice of that field = 280 × 2
• = 560

Noori runs rectangular field by = 2(80+50)

• => 2 × 130
• => 260

Noori runs twice of that field = 260×2

• => 520

difference between covered by Mitali and Noori

• 560-520
• => 40