Standard Mathematics Primary 4 Area and Perimeter

The figure below shows an L-shaped rectilinear figure. The total width of the figure is 15 cm. The left section is 10 cm wide and 10 cm tall. The right section is 6 cm tall. The width of the right section is not labelled. What is the area of the L-shaped figure?

A 130 cm²
B 150 cm²
C 100 cm²
D 120 cm²
Show Worked Solution

Worked Solution

Step 1: Work out the width of the right section. 15 − 10 = 5 cm Step 2: Find the area of the left section. 10 × 10 = 100 cm² Step 3: Find the area of the right section. 5 × 6 = 30 cm² Step 4: Add the two areas. 100 + 30 = 130 cm²

Correct answer: 130 cm²

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