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p985030
@p985030
December 2023
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14. A race track is in the form of a ring whose inner circumference is 220 m and outer circumference is 264 m. Find the area of the track.
Ans is_ 1694m²
Answers & Comments
noorhossain6566
Verified answer
Step-by-step explanation:
given,
for inner circle 220=2πг r1=220/2π=110×7/22=35m for outer circle 264=2π r2=264/2π=264×7/2×22 =12×7/2=42m
Now,
area of inner circle =πr²=22/7×35×35 =22×5×35 =3850m²
area of outer circle =πr²=22/7×42×42 =22×6×42 =5544m²
Area of track = outer circle area-inner circle area
= 5544-3850 =1964m²
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Answers & Comments
Verified answer
Step-by-step explanation:
given,
for inner circle 220=2πг r1=220/2π=110×7/22=35m for outer circle 264=2π r2=264/2π=264×7/2×22 =12×7/2=42m
Now,
area of inner circle =πr²=22/7×35×35 =22×5×35 =3850m²
area of outer circle =πr²=22/7×42×42 =22×6×42 =5544m²
Area of track = outer circle area-inner circle area
= 5544-3850 =1964m²
Answer is 1664m²
Please mark me as brainliest ❤️