Question

A building casts a shadow in the shape of a right triangle with a base 18 feet wide and a height of 20 feet. What is the total area of the shadow?

Answer 1

$\tt\bf\underline{ANSWER}$

Given:

• a building casts a shadow in the shape of a right triangle.

We infer from this that the geometrical shape whose area is to be calculated is a right angled triangle.

Also given,

Base of the triangle = 18 feet.

Height of the triangle = 20 feet.

To find:

• total area of the shadow (in feet)

Formula to be used:

Area of a right angled triangle = ½ × base × height

Solution:

Area of the shadow = ½ × 18 × 20

Area of the shadow = ½ × 360

Area of the shadow = 180 ft²

•°•Area of the shadow casted by the building is 180 sq.ft.