Find the area of the trapezoid whose b1 is 12 cm, b2 is 8 cm and the height is 20 cm
Find the area of the trapezoid whose b1 is 7 cm, b2 is 20 cm and the height is 10 cm.
Find the area of the trapezoid whose b1 is 5 cm, b2 is 11 cm and the height is 8 cm