Page 73 - SPARK OF MATH book 4
P. 73
(4-3) Measuring Areas.
An area is the measurement of a surface. The unit of an area is
2
measured in units of length squared, for example cm , m 2
7 cm 2 cm
4 cm 3 cm
The area of this rectangle is The area of this rectangle is
28 cm²= cm× cm 6 cm²= cm× cm
8 cm Area of a rectangle side= 7m Area of a square
10 cm
To find the area of a rectangle, The area of a square equals any of
use the formula its two sides multiplied together.
This formula is often written as
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