Math, asked by 22294, 3 months ago

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Answered by guptavishrut
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Answer:

Step-by-step explanation:

(i) Given, Side of a square=70 m

From the given figure.

The Diameter of the semi-circle =70m

So, Side of square = Diameter of semi-circle =70m

Hence, the perimeter of the lawn =diameter+semiperimeter of circle

=70+1/2×2πr

=290 m

(ii) Area of square =70×70=4900m²  

Hence, the required area Area of the square - area of the semicircle

=4900-1/2×π×r²

=4900-1/2×22/7×35²

=4900-1/2×22/7×1225

=4900-1925

=2975 m²

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