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A circular Ground whose diameter is 35 meters has a 1.4 meters broad garden around it.What is the area of the garden in square meters ?
- A160.16
- B6.16
- C1122.66
- DData Inadequate
Answer not set
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0
CCommunity
Solution
Radius of circular ground = $r = \frac{35}{2}=17.5$ m and width of broad garden = 1.4 m
=> Radius of outer circle (ground+garden), R = 17.5 + 1.4 = 18.9 m
Area of garden = Area of outer circle - Area of inner circle
= $\pi R^2-\pi r^2 = \pi(R-r)(R+r)$
= $\frac{22}{7}(18.9-17.5)(18.9+17.5)$
= $\frac{22}{7} \times 1.4 \times 36.4$
= $22 \times 0.2 \times 36.4 = 160.16$ $m^2$
=> Ans - (A)
Radius of circular ground = $r = \frac{35}{2}=17.5$ m and width of broad garden = 1.4 m
=> Radius of outer circle (ground+garden), R = 17.5 + 1.4 = 18.9 m
Area of garden = Area of outer circle - Area of inner circle
= $\pi R^2-\pi r^2 = \pi(R-r)(R+r)$
= $\frac{22}{7}(18.9-17.5)(18.9+17.5)$
= $\frac{22}{7} \times 1.4 \times 36.4$
= $22 \times 0.2 \times 36.4 = 160.16$ $m^2$
=> Ans - (A)
0
CCommunity
Solution
Radius of circular ground = $r = \frac{35}{2}=17.5$ m and width of broad garden = 1.4 m
=> Radius of outer circle (ground+garden), R = 17.5 + 1.4 = 18.9 m
Area of garden = Area of outer circle - Area of inner circle
= $\pi R^2-\pi r^2 = \pi(R-r)(R+r)$
= $\frac{22}{7}(18.9-17.5)(18.9+17.5)$
= $\frac{22}{7} \times 1.4 \times 36.4$
= $22 \times 0.2 \times 36.4 = 160.16$ $m^2$
=> Ans - (A)
Radius of circular ground = $r = \frac{35}{2}=17.5$ m and width of broad garden = 1.4 m
=> Radius of outer circle (ground+garden), R = 17.5 + 1.4 = 18.9 m
Area of garden = Area of outer circle - Area of inner circle
= $\pi R^2-\pi r^2 = \pi(R-r)(R+r)$
= $\frac{22}{7}(18.9-17.5)(18.9+17.5)$
= $\frac{22}{7} \times 1.4 \times 36.4$
= $22 \times 0.2 \times 36.4 = 160.16$ $m^2$
=> Ans - (A)