Question

how many times a wheel of radius 28 cm must rotate to go 325 m ?​

Answer 1

Answer :-

Number of rotations are 200.

Step-by-step-explanation :-

Given :-

⇒ Radius of wheel = 28 cm

⇒ Distance travelled = 325 m

To find :-

⇒ Number of rotations

Solution :-

⇒ Number of rotations = $\frac{Distance\;travelled}{Circumference\;of\;wheel}$

⇛ Circumference of wheel (circle) = 2πr

• 2 × 22/7 × 28
• 44/7 × 28
• 176 cm
• 176/100 m
• 1.76 m

∴ Circumference of wheel = 1.76 m

⇒ Distance travelled = 325 m

∴ Number of rotations = $\frac{352}{1.76}$

• $\frac{352}{176}*100$

• $\frac{88}{44}*100$

• $2*100$

• $200$

∴ Number of rotations are 200 or wheel rotates 200 times.

Answer 2

Answer:

200 times

Step-by-step explanation: