AC Lim's answer to Shushi's Primary 5 Maths Area & Volume Singapore question.
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If you calculate 1B is ½ × 23 × 5 than ×2 =115
If you calculate 2B is ½ × 23 × 10 =115
It depend on your calculation. Total 2B should be 115.
Hope this helps
How come the shaded length becomes 5cm instead of 10cm?