Math, asked by amar8097, 1 year ago

a pentagonal park.Neha and Nidhi divided it in two different ways to find its area.

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Answered by pinquancaro
143

Consider the given pentagonal park.

Let us find the area of the park which Neha divided.

Neha divided the pentagonal park into two trapezoids.

So, area of the park = 2 \times Area of trapezoid

= 2 \times \frac{(a+b) h}{2}

where 'a' and 'b' are the lengths of the parallel sides of the trapezoid and 'h' is the height

= 2 \times \frac{(15+28) \times 6}{2}

= 258 square meters.

Now, let us find the area of the park which Nidhi divided. Nidhi divided the park into one triangle and one rectangle.

So, area of the park = area of triangle + area of rectangle

= \frac{1}{2} bh + lw

where 'b' is base and 'h' is height of the triangle and 'l' is length and 'w' is width of the rectangle.

=(\frac{1}{2} \times 12 \times 13) + (15 \times 12)

= 78 + 180

= 258 square meters.

So, the area of the given pentagonal park is 258 square meters,

Answered by sudha76
89

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