- A14,400 sq cm
- B7,200 sq cm
- C3,600 sq cm
- D9,000 sq cm
Step-by-Step Solution
Cut into four 30 cm wide columns of heights 30, 60, 90 and 120 cm: sq cm counts only the step squares; is the full box.)
Answer: D) 9,000 sq cm
The side wall of a staircase has 4 steps, each 30 cm high and 30 cm deep, as shown. What is the area of this side wall?
Class 6Area of Combined ShapesMensuration
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