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Can someone help i really need help

Can someone help i really need help-example-1
User Asadnwfp
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1 Answer

3 votes

9514 1404 393

Answer:

1. no problem is stated

2. cube: V = s³; A = 6s². prism: V = lwh; A = 2(lw +h(l+w))

3. 400 cm²

Explanation:

1, 2. Answers shown above. The formulas are from your list of formulas.

__

3. Cube surface area is ...

A = 6(20 cm)² = 2400 cm²

Prism surface area is ...

A = 2((40 cm)(20 cm) +(10 cm)(40 cm +20 cm))

A = 2(800 cm² +10(60) cm²) = 2(1400 cm²) = 2800 cm²

The difference in areas is ...

2800 cm² -2400 cm² = 400 cm² . . . . difference in surface area

User Kumar Chandraketu
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