Question

Find the area of each of the following polygons
please answer me​

Answer 1

Answer:

First of all find the area of the rectangle formed after joining AD

Then find the area of trapezium ADEF

And add them.

First of all area of rectangle=lxb=300cm sq.

Area of trapezium ADEF= 1/2 x (sum of || sides) x height

=21x4=84cm sq.

Total area=384 cm sq.

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Answer 2

Step-by-step explanation:

The given figure can be divided in the following manner:

From the above figure;

AB = AC - BC = 28 - 20 = 8 cm

So that the area of the complete figure = (area of rectangle BCDE) + ( area of trapezium ABEF)

= (BC × CD) + [ 1 × (BE + AF) × (AB)]

2

= (20 × 15) + [ 1 × (15 + 6) × (8)]

2

= 300 + 84

= 384 cm²