Isosceles trapezoid

Find the area of an isosceles trapezoid with bases of 8cm and 72mm. The height of the trapezoid is equal to three-quarters of the longer base.

Correct answer:

S =  45.6 cm2

Step-by-step explanation:

a=8 cm c=72 mm cm=72:10  cm=7.2 cm  h=43 a=43 8=43 8=424=6 cm  S=2a+c h=28+536 6=5228 cm2=45.6 cm2

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