find the perimter and area of the following figures
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find the perimter and area of the following figures
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area of rectangle=l×b
=10×7
=70m^2
perimeter of rectangle=2(l+b)
2(10+7)
2(17)
2×17
=34
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[tex]area \: is \: = \: l \times b = 10 \times 7 = 70 {m}^{2} [/tex]
[tex]perimeter \: is \: = \: 2(l + b) = 2(7 + 10) = 2(17) = 34m[/tex]
[tex]area \: of \: semicircle \: is \: = \frac{\pi {r}^{2} }{2} = \frac{22 \times 3.5\times 3.5}{7 \times 2} = 11 \times 0.5 \times 3.5 = 19.25{cm}^{2} [/tex]
[tex]perimeter \: of \: semicircle \: is \: = \pi r + d = \frac{22}{7} \times 3.5 + 7 = 22 \times 0.5 + 7 = 11 + 7 = 18cm[/tex]