Question

WILL MARK AS BRAINLIEST

Answer 1

Step-by-step explanation:

AREA=(1/2)*BASE*HEIGHT

=(1/2)*15*12

=90km^2

Answer 2

Answer:

$Area \: of \: triangle = 90 \: {km}^{2}$

Step-by-step explanation:

According to the question;

Base of the triangle = 15 km

Height of the triangle = 12 km

$Area \: of \: a \: triangle = \frac{1}{2} \times base \times height \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{2} \times 15 \: km \times 12 \: km \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 15 \: km \times 6 \: km \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 90 \: {km}^{2}$

ADDITIONAL INFORMATION

⭐ AREA OF 2D SHAPES ⭐

$Area \: of \: Square = Side \times Side \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {(Side)}^2$

$Area \: of \: Rectangle = Length \times Breadth$

$Area \: of \: Circle = \pi \times {radius}^2$

$Area \: of \: Parallelogram = Base \times Vertical \: height$

$Area \: of \: Trapezium = \frac{1}{2} Sum \: of \: Length \: of \: Parallel \: Side \times Height$

$Area \: of \: Ellipse = \pi \times \frac{1}{2} Minor \: axis \times \frac{1}{2} Major \: axis$