Question

Find the area of shaded portion​

Answer 1

Step-by-step explanation:

a)area of shaded portion = area of rectangle - area of triangle

=area of rectangle =l×b

=20×10

200cm

are of triangle =1/2×base × height

=1/2×10×15

=1/2×150

=75

area of shaded portion =200 -75

=125cm

B)are of shaded portion= 2 ×side × side

=3×3=9+9

=18cm

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Answer 2

Answer:

(a) Length of the whole rectangle= 20cm

breadth of the rectangle= 10cm

area of the rectangle= 20 x 10= 200cm².

area of the unshaded part= 1/2 x 15 x 10= 75cm²

.: area of the shaded = 200cm²-75cm²= 125cm².

(b)

area of a small square=3 x 3 = 9cm²

since there are 2 small squares, 9 x 2= 18cm²

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