2. Find the circumference and area of a circle of diameter:
(a) 56 m
(b) 42 m
(c) 110 m
(d) 132
3. The diameter of a wheel is 1.26 m. How far will it travel in 500 revolutions?
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Answer:
Step-by-step explanation:
Dimensions of Wheel -
Diameter = 1.26 m
Radius = (1.26 / 2) m = 0.63 m = 630 cm
Circumference of the Wheel -
= 2Πr
= [ 2 × 22 / 7 × 630 ] cm
= [ 2 × 22 × 90 ] cm
= 3960 cm
Total revolutions by the wheel = 500
∴ Total distance travelled by the wheel
= No. of revolutions × circumference of wheel
= [ 500 × 3960 ] cm
= 1,980,000 cm
= 19,800 m
Hence, the total distance travelled by the wheel is 19,800 meters.
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