Question

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Answer 1

Shaded Portion is Figure=EBC
EBC is a Triangle

BC is Base of Triangle=18 m
DC is Altitude of Triangle=20 m

$area \: of \: triangle = \frac{1}{2} \times base \: \times height \\ \frac{1}{2} \times 18 \times 20 \\ = 180 {m}^{2}$
So area of shaded Region=180 m²

Answer 2

$<b>$ hey mate

here's your answer,

as we as know that the formula of area of triangle is $\huge\frac{1}{2}$ × base × height

Base = 18m

height =20m

so ,area of shaded portion:

》 $\huge\frac{1}{2}$ × base × height

》 $\huge\frac{1}{2}$ × 18m × 20m

》 180${m}^{2}$

$\therefore$ the are of triangle is 180${m}^{2}$....

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hope it helps you mate

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be brainly