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vredina [299]
3 years ago
11

Question 1 of 16,

Mathematics
1 answer:
KIM [24]3 years ago
7 0

Answer:

19cm

Step-by-step explanation:

The area  of a trapezoid =\dfrac12(a+b)h (where a and b are the parallel sides).

Given:

Area = 189 Square cm

Height, h=14cm

a=8cm

We want to find the value of the other parallel side, b.

Substitution of the given values gives:

189=\dfrac12(8+b)14\\189=7(8+b)\\$Divide both sides by 7\\8+b=27\\Subtract 8 from both sides\\b+8-8=27-8\\b=19cm

The length of the second parallel side is 19cm.

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