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Please help me to get the answers please its important​

Please help me to get the answers please its important​-example-1

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Answer:

Q16a: 432 cm³

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

Explanation:

Q16a

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.

__

Q16b

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.

User Noah Watkins
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