easy

# 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.

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