Question

5. A rectangular field is 90 m by 70 m. A man walks around it at the rate of 4 km
per hour. What time will he take in making 5 rounds?
6. Find the perimeter of the rectangle whose length is 70 cm and breadth is 30 cm​

Answer 1

Answer:

Answer. So his speed = 4 km / hr = 4 km / 60 min = 1 km in 15 min . Hence the person takes 24 min .

Answer 2

Answer: 6

Length,l = 70 cm

Breadth,b = 30 cm

Perimeter of rectangle = 2(l+b)

2(70 + 30) cm

2× 100 cm

200 cm