Simple polygon area problems - easy

Problem №1

Find (in cm²) the area of a square with side a=5cm.

Problem №2

If the side of a square is a=1cm, find its area (in $cm^2$ ).

Problem №3

If the sides of a rectangle are a=3cm and b=5cm, determine its area (in $cm^2$ ).

Problem №4

If the sides of a rectangle are a=2cm and b=7cm, determine its area (in $cm^2$ .

Problem №5

In a triangle ABC, AB=5cm and CH=8cm, where $CH \bot AB; H \in AB$ . Determine the area of ABC (in $cm^2$ ).

Problem №6

In a triangle ABC, the side BC=4cm and the altitude to it is AH=3cm. Determine the area of ABC (in $cm^2$ ).

Problem №7

In a right triangle ABC ( $\angle ACB=90^{\circ}$ ), the sides AC and BC have respective lengths 7cm and 8cm. Determine the area of ABC in $cm^2$ .

Problem №8

The area of a square is $S=49cm^2$ . Find the length of its side in centimeters.

Problem text:
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