Question

The tire of a car has a radius of 10.5 inches. How many revolutions does the tire need to make for the car to travel 13,200 inches? Use pi as 22/7

Answer 1

Step-by-step explanation:

no. of revolutions = 13200/ 2 (22/7) 10.5

= 13200/(44×10.5/7)

= 13200/66

=200

Answer 2

HEY MATE YOUR ANSWER IS HERE

RADIUS :- 10.5 INCHES

1 inch = 2.54 cm

10.5 inches = (10.5 ×2.54 )cm

CIRCUMFERENCE OF CIRCLE :- 2πR

HENCE :-

$2 \times 10.5 \times 2.54 \times \frac{22}{7} \\ \\ = 21 \times 2.54 \times \frac{22}{7} \\ \\ = 3 \times 2.54 \times 22 \\ \\ = 167.64 \: cm$

NOW TOTAL DISTANCE COVERD IN 1 ROUND

= 167.64 cm

HENCE ,

TOTAL DISTANCE = 13200 INCHES

13200 INCHES = (13200 × 2.54) cm

NOW TOTAL NUMBER OF REVOLUTION =

$= \frac{13200 \times 2.54}{167.64} \\ \\ = \frac{33528}{167.64} \\ \\ = 200$

HENCE TOTAL NUMBER OF REVOLUTION IN 13200 INCHES = 200

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