a road which is 7 m waise surrounds a circular park whose circumference is 352 m . find the area of the road.(pie= 22/7)
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Step-by-step explanation:13 answers · Mathematics
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Find the radius of the circular park.
352=2pi(r) so r = 352/(2pi)=176/pi
Area of the park = pi(r^2) = pi(176/pi)^2 = 30976/pi
Area of park plus road area = pi[(176+7pi)/pi]^2
Area of the road =30976/pi - [(176+7pi)^2]pi
jassrandhawa31:
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circumference of park = 352
2πr = 352
r = 352 ×7/22×2
r = 56 m
R = radius of circular road = 56+ 7 = 63m
area of road = πR² - πr²
22 × 63² / 7 - 22×56²/7
22* 3969 /7 - 22*3136 / 7
22* 567 - 22* 448
12474 - 9856
Ans. = 2618
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