9.06 Perimeter and area

Interactive practice questions

The total area of this shape is $68$68 cm².

If the area of rectangle $A$A is $23$23 cm², what is the area of rectangle $B$B?

Easy

Approx a minute

The total area of this shape is $55$55 cm².

If the area of rectangle $B$B is $39$39 cm², what is the area of rectangle $A$A?

Answer the following:

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selects and uses the appropriate unit and device to measure lengths and distances, calculates perimeters, and converts between units of length

selects and uses the appropriate unit to calculate areas, including areas of squares, rectangles and triangles