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The orange rectangle is drawn on graph paper. What is its area?

Class 7Multiplication of DecimalsFractions and Decimals

A $21 cm^{2}$
B $5.25 cm^{2}$
C $10 cm^{2}$
D $52.5 cm^{2}$

Step-by-Step Solution

Length

= 7 \times 0.5 = 3.5

cm, width

= 3 \times 0.5 = 1.5

cm. Area

= 3.5 \times 1.5 = 5.25 cm^{2}

. Counting 21 squares gives squares, not

cm^{2}

.

Answer: B)

5.25 cm^{2}

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