What is the area of a trapezoid if the height is 7 cm and the parallel sides are 8 cm and 12 cm long?

Sagot :

The bases of a trapezoid is always parallel. So the "parallel sides" are the bases..
[tex]Area= \frac{(b_1+b_2)h}{2} = \frac{(8+12)7}{2} = \frac{20*7}{2} =70[/tex]

Therefore the area is 70 cm^2