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primary 5 | Maths
| Area & Volume
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Kindly help me this math question. Thank you
Date Posted: 5 years ago
Views: 746
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Hope this helps
Date Posted:
5 years ago
Thank you very much for helping
Very satisfied. Thank you
Thank you
1/2 × 12x12 = 72
This is most intuitive answer.
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U missed the small triangle. Hope this helps.
Date Posted:
5 years ago
I think she drew the lines. Just didn't think of using the complement method
Yeah. Think I misleading TSL from the 1st question. I never use full rectangle 27x15 instead I use 27x12 for calculation. But I can see TSL have the idea to solve this type of question already.
Not misleading at all haha. It's also using the complementary method, students mustn't have the idea of using only 1 way (full rectangle) to solve.
The 27 x 12 works since it's rectangle also. What I worry is students always want to start from the whole figure when not needed
The 27 x 12 works since it's rectangle also. What I worry is students always want to start from the whole figure when not needed
Thank you very much teacher J and AC Kim for the explanation
Sorry typo error. AC Lim
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I use same method to solve this problem, but cannot. Kindly help. Thank you
Date Posted:
5 years ago
See the 4cm line you drew? You get a big rectangle.
Subtract the 3 unshaded triangled from the area of the large rectangle find the shaded triangle's area.
Final answer is 40.5cm²
Subtract the 3 unshaded triangled from the area of the large rectangle find the shaded triangle's area.
Final answer is 40.5cm²
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It have the same base and height
Date Posted:
5 years ago
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