The total surface area of a cubical chalk box is 96 cm 2- What is the length of its edge-

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The total sur...

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The total surface area of a cubical chalk box is 96 cm². What is the length of its edge?

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4 c m

A cubical box has edge 10 cm and another cuboidal box is 12.5 cm long, 10 cm wide and 8 cm high.

(i) Which box has smaller total surface area?

(ii) If each edge of the cube is doubled, how many times will its T.S.A increase?

10 c m

12.5 c m

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A cubical box has each edge $10 c m$ and another cuboidal box is $12.5 c m$ long, $10 c m$ wide and $8 c m$ high.

(i) Which box has the greater lateral surface area and by how much?

(ii) Which box has the smaller total surface area and by how much?

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