Question

The triangle inscribed within square ABCD has, as its base, side AD, and has a height of 6 cm. If the area of the triangle is 21 cm2, what is the area of the shaded region?

Answer 1

What shaded region?

Answer 2

The triangle inside the square has an area of 21cm. The shaded area is the remaining space outside the triangle inside the square.

Answer 3

if the triangle base is the side s,

6s/2 = 21
s = 7

area of square = 49
49-21=28