- A20
- B38
- C19
- D18
Step-by-Step Solution
Wall area = sq m. Window area = sq m. Paint area = 20 - 1 = 19 sq m.
Answer: C) 19
A wall 5 m long and 4 m high has a square window of side 1 m.
The wall (excluding the window) is to be painted.
What area must be painted?
Class 6Area of Rectangles and SquaresMensuration
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