Question

AREA OF rectangle , trapezium,triangle,square,circle,parreleoram,Pentagon,hexagon,decagon and octagon
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Answer 1

☯ Area of Rectangle = lb

☯ Area of Trapezium = (a + b/2)h

☯ Area of Triangle = 1/2 bh

☯ Area of Square = a²

☯ Area of Circle = πr²

☯ Area of Parallelogram = bh

☯ Area of Pentagon = 25¾ √A/ [ 5(√20+5)¼ ]

☯ Area of Hexagon =3¼√2A/9

☯ Area of Decagon = 5/2a²√5+2√5

☯ Area of Octagon = 2(1 + √2)a²

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Answer 2

Step-by-step explanation:

rectangle - l×b

trapezium - 1/2(a+b)×h

triangle - 1/2×b×h

square - a×a = a^2

circle -

$\pi {r}^{2}$

parallelogram- b×h

Pentagon- 5/2×s×a

hexagon -

$\frac{3 \sqrt{2} }{3} {a}^{2}$

decagon -

$\frac{5}{2} {a}^{2} \sqrt{5 + 2 \sqrt{5} }$

octagon -

$2(1 + \sqrt{2) {a}^{2} }$

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