The parcel has a rectangular shape of a trapezoid with bases of 12 m and 10 m and a height of 8 m. On the parcel was a built object with a footprint of an isosceles triangle shape with a side of 4 m and a height of three-quarters of a meter. What is the area of the unbuilt parcel?

Correct answer:

S =  86.5 m2

Step-by-step explanation:

a=12 m c=10 m h=8 m  x=4 m v=3/4=43=0.75 m  S1=2a+c h=212+10 8=88 m2 S2=2x v=24 0.75=23=1.5 m2  S=S1S2=881.5=86.5 m2

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Calculation of an isosceles triangle.
See also our trigonometric triangle calculator.

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