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Mila [183]
3 years ago
11

28 points !!!! help

Mathematics
2 answers:
RoseWind [281]3 years ago
8 0

Answer:

12 cm

Step-by-step explanation:

The area (A) of a trapezium is calculated as

A = \frac{1}{2} h (a + b)

where h is the perpendicular height and a, b the parallel bases.

Here A = 45, h = 5, a = 6 and b = ?, thus

45 = \frac{1}{2} × 5 × (6 + b) = 2.5(6 + b) = 15 + 2.5b ( subtract 15 from both sides )

30 = 2.5b ( divide both sides by 2.5 )

b = 12

The measure of the other parallel side is 12 cm

DedPeter [7]3 years ago
7 0

Answer:

12 cm

Step-by-step explanation:

45 = ½ (6 + x) × 5

18 = 6 + x

x = 12

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