Question

find the area of the isosceles triangle if one of the side is 20cm​

Answer 1

Step-by-step explanation:

area of isosceles right triangle

\begin{gathered} = \frac{1}{2} \times {side}^{2} \\ = \frac{1}{2} \times {20}^{2} \\ = \frac{1}{2} \times 20 \times 20 \\ = 10 \times 20 \\ = 200 {cm}^{2} \\ \end{gathered}

=

2

1

×side

2

=

2

1

×20

2

=

2

1

×20×20

=10×20

=200cm

2