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Mensuration Practice Test 10
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© examsnet.com
Question : 2
Total: 40
A fountain whose diameter is 70 m is surrounded by a 2 m wide circular grass walk. Find the area of the grass walk?
534
m
2
453
m
2
354
m
2
345
m
2
Validate
Solution:
Area of fountain =
π
(
35
)
2
Complete area =
π
(
37
)
2
Area of grass walk =
π
(
37
)
2
−
π
(
35
)
2
=
22
7
(
1369
−
1225
)
=
22
7
×
144
= 453
m
2
© examsnet.com
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