# Find the area of the shaded part?

##### 3 Answers

#### Explanation:

The area

If we treat the side of length

Similarly, if we treat the length

As the area of the shaded section is the difference between the area of the large triangle and the area of the white triangle, we have our desired area as

See below.

#### Explanation:

Supposing no tricks and using

Now using Heron's formula with

which is different from the former

Area of the shaded portion

#### Explanation:

Using the general principle that the area of a triangle is:

The overall triangle area

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The smaller triangle area

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The area of the shaded portion

Using Pythagoras it should be the case that:

base of the whole

RHS