Can someone help i really need help

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  1. no problem is stated

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

  3. 400 cm²

Step-by-step 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

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)