Find the perimeter of a triangle with sides 4cm, 3cm, 5cm. Make a rectangle from two such triangles

Find the perimeter of a triangle with sides 4cm, 3cm, 5cm. Make a rectangle from two such triangles, find its perimeter and area. Find the area of a triangle.

First, we determine the perimeter of the triangle, that is, the sum of all its sides.

4 cm + 3 cm + 5 cm = 12 cm.

If it is said that it is necessary to make a rectangle from two triangles, then a triangle is rectangular.

Thus, the hypotenuse of the triangle, which is 5 cm, becomes the diagonal of the rectangle.

This means that we will find the perimeter and area of the rectangle if its sides are 4 cm and 3 cm.

Perimeter: 4cm + 4cm + 3cm + 3cm = 14cm.

Area: 4 cm * 3 cm = 12 cm2.

We find the area of a right-angled triangle using the Pythagorean theorem.

√42 + 32 = √16 + 9 = √25 = 5 (cm2).