Question

Q.9 The diameter of a wheel of a bus is
70cm. How much distance will it cover in
880 revolution?​

Answer 1

Answer:

• 1936 m

Step-by-step explanation:

Given

• Diameter = 70 cm

To find

• Distance the wheel will cover in 880 revolutions

Solution

Distance in one revolution = Circumference of wheel

Since, circumference means boundary/perimeter.

Circumference of circle:

• 2πr

Where:

• r = radius
• r = d/2 = 70/2
• r = 35 cm

Now:

• 2 × 22/7 × 35
• 2 × 22 × 5
• 44 × 5
• 220

Now:

• 1 revolution = 220 cm
• 880 revolutions = 220 × 880
• 193600 cm
• or 193600/100 m
• 1936 m

Hence, the distance covered is 1936 m in 880 revolutions by wheel of bus.

Answer 2

Answer:

1936 m

Step-by-step explanation:

Diameter of wheel = 70 cm

Circumference = piπ × d

= 22/7 × 70

= 22 × 10

= 220 cm

Distance in 880 revolutions = 220 × 880

= 193600 cm

In meters, = 1 m = 100 cm

= 193600/100

= 1936 meter