Question

diameter of the circle so formed.
7. Find the distance covered by a wheel of radius 1.4 m, if it makes 250 revolutions.
8. Find the perimeter of a rectangle of length 12 cm and breadth 5.5 cm. What will be th​

Answer 1

Answer:

To calculate the circumference, you can just multiply the diameter by π, which is about 3.142. That gives you the distance for each revolution. Then you can multiply by the number of revolutions per minute. That will give you the distance traveled in each minute.

Answer 2

Answer:

Ans 7. 2200 metres Ans 8. 35cm

Step-by-step explanation:

Ans 7. In the question we are given : the radius (r) = 1.4m

No. of revolutions = 250

So , for finding the distance covered , we will find the perimeter/circumference of the circle by the formula :2πr

which is : 2*22/7*1.4 = 8.8m

now the total distance covered will be : perimeter of circle * no. of revolutions

which is : 8.8*250

= 2200m

Ans 8. Perimeter of rectangle = 2*(length +breadth)

= 2* (12+5.5)

= 2*17.5

=35 cm