A) \[40\text{ }{{m}^{2}}\]
B) \[\text{86 }{{m}^{2}}\]
C) \[\text{60 }{{m}^{2}}\]
D) \[\text{172 }{{m}^{2}}\]
Correct Answer: B
Solution :
(b): \[{{C}_{1}}\] to \[{{C}_{4}}\]4 are four cows Ungrazed area = area of square - area of four quarter circles. \[=20\times 20-4\times \frac{\pi }{4}\times {{\left( 10 \right)}^{2}}\] \[=400-100\pi \] \[=100\,(4-\pi )\] \[\approx 86\]You need to login to perform this action.
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