Question

A solid cuboid of 15cm X 12cm X 10cm. From each of its vertex cube of edge 2 cm is cut out. Find the % change in its TSA.​

Answer 1

Answer:

TSA before cutting = (15×12+15×10+ 12×10)×2 =900

After cutting {(15×12 - 4×4) + (15×10 - 4×4) + (12×10-4×4)}×2

={164+134+104}×2 =804

So change in TSA 900-804 = 96

Therefore % change = (96/900)×100 = 10.7%Ans

Answer 2

Answer:

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