Mensurationeasy · Past Paper
Find the area of the cardboard needed to make a closed box of size 20cm x 15cm x 10cm.
A600 cm²
B1300 cm²
C3000 cm²
D1500 cm²
✓ Correct Answer: B — 1300 cm²
TSA = 2(20*15 + 15*10 + 10*20) = 2(300 + 150 + 200) = 2(650) = 1300 cm².
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