around a circular park of radius 21m, there is circular road of uniform width 7m outside it. find the area of road
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Answered by
3
circumference of circle =length of road
circumference=2 pie*r=2*22/7*21=2*22*3=132m
area of road=l*b=132*7=924m2
hope i helped u
circumference=2 pie*r=2*22/7*21=2*22*3=132m
area of road=l*b=132*7=924m2
hope i helped u
Kunal1111111:
no its wrong answer
Answered by
7
Answer:
1078 sq m
Step-by-step explanation:
Radius of circle= 21 m(r)
Width of road =7m
Total radius of circle along with road =28m(R)
area of the Road= (area of circle along with road)-(area of circle)
= (πR^2)-(πr^2)
= (22/7×28×28)-(22/7×21×21)
= 2464-1386
= 1078 sq m
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