A signboard at a hawker centre is made up of a rectangle and a triangle joined together. The rectangle has a length of 10 cm and a breadth of 6 cm. A triangle with a base of 10 cm and a height of 4 cm is attached to the top of the rectangle (sharing the 10 cm side). Find the total area of the signboard.
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Worked Solution
Step 1: Find the area of the rectangle.\n Area of rectangle = length × breadth = 10 × 6 = 60 cm².\n
Step 2: Find the area of the triangle.\n Area of triangle = ½ × base × height = ½ × 10 × 4 = 20 cm².\n
Step 3: Add the two areas to get the total area of the composite figure.\n Total area = 60 + 20 = 80 cm².
Answer: 80 cm²
Correct answer: 80 cm²
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