Question

For 20 points

Please Help it is due today and I I don't get how to find the height. I am a 7th grader and it is a 6th grade work for the whole class. I didn't even do this in 6th grade it is hard

Please Help

Answer 1

Answer: 7km

Explanation:

Answer 2

The height of trapezoid is 7km.

Explanation:

Given that the area of trapezoid formula is A = 1/2×(a+b)×h where a and b represents the length and h is the height. By substituing the values, you are able to find the height :

`area = (1)/(2) * (a + b) * h`

Let a = 4km,

Let b = 8km,

Let area = 42km²,

`42 = (1)/(2) * (4 + 8) * h`

`42 = (1)/(2) * 12 * h`

`42 = 6 * h`

`6h = 42`

`h = 7 \: km`