Question

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please give me Answer​

Answer 1

Step-by-step explanation:

r = 3.5 m

or

$= \frac{7}{2} m$

length of rectangle = 20 - 7

= 13m

breadth of rectangle = 7m

total area of garden = area of rectangular part + area of semi circular part

$= 13 \times 7 + \frac{\pi}{2} \times( \frac{7}{2} ) {}^{2} + \frac{\pi}{2} \times ( \frac{7}{2} ) {}^{2}$

$= 91 + \frac{\pi}{2} \times \frac{98}{4}$

$= 91 + \frac{22}{7} \times \frac{49}{4}$

$= 91 + \frac{77}{2}$

$= 91 + 38.5m {}^{2}$

$= 129.5m {}^{2}$

perimeter of garden = 2 × length + 2πr

$= 2 \times 13 + 2 \times \frac{22}{7} \times \frac{7}{2}$

$= 26 + 22$

$= 48m$