Area of trapezoid

The trapezoid bases are 7 cm and 9 dm. Its height is 6 cm. Calculate the area of the trapezoid.

Correct answer:

S =  291 cm2

Step-by-step explanation:

a=7 cm b=9 10=90 cm v=6 cm S=(a+b) v/2=(7+90) 6/2=291 cm2

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