J's answer to JEHO's Primary 6 Maths Measurement Singapore question.
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Alternative approach to the one that I left in the question's comments section:
The whole square can be divided into 4 rectangles. Notice that for every shaded part (▲) , there is an identical unshaded part with the same area (△). So all the shaded ▲s form up half the total area of the square. (The other half is made up of unshaded △s)
So area of shaded = area of unshaded = ½ × 11 cm × 11 cm = 60.5 cm²
The whole square can be divided into 4 rectangles. Notice that for every shaded part (▲) , there is an identical unshaded part with the same area (△). So all the shaded ▲s form up half the total area of the square. (The other half is made up of unshaded △s)
So area of shaded = area of unshaded = ½ × 11 cm × 11 cm = 60.5 cm²
Date Posted:
3 years ago
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