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nata0808 [166]
3 years ago
14

Please help me to get the answers please its important​

Mathematics
1 answer:
IrinaK [193]3 years ago
5 0

Answer:

  Q16a: 432 cm³

  Q16b: sides: 20 m, 6 m; height: 13 m.

Step-by-step explanation:

<h3>Q16a</h3>

Each cube will have a volume ...

  V = s³

  V = (6 cm)³ = 216 cm³

The two cubes together will have a volume that is twice that.

The cuboid volume is 432 cm³.

__

<h3>Q16b</h3>

Let h represent the height of the trapezium. Then its area is ...

  A = 1/2(b1 +b2)h

  169 = 1/2((h +7) +(h -7))h = 1/2(2h²) = h²

  h = √169 = 13 . . . . . distance between the parallel sides

The side lengths are h+7 = 20 m and h-7 = 6 m. The distance between them is 13 m.

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