A right angled trapezoid, the sum of the top and bottom is 18 cm, and the two waists are 4 cm and 6 cm long respectively. How many square centimeters is the area of this trapezoid?

A right angled trapezoid, the sum of the top and bottom is 18 cm, and the two waists are 4 cm and 6 cm long respectively. How many square centimeters is the area of this trapezoid?

A: the area of trapezoid is 36 square centimeters

The base and height of a triangle and a parallelogram are equal. It is known that the area of a triangle is 4 square decimeters, and what is the area of a parallelogram

Area of parallelogram = base x height
Triangle area = bottom x height / 2
So flat is twice the area of three,
So the area of the parallelogram is 8 square decimeters

The two diagonal lines AC and BD of trapezoidal ABCD intersect at O. it is known that the area of triangle ABO and BCO are 10 and 15 respectively. What is the area of trapezoidal ABCD in square centimeter

Triangle ABO CBO is equal height. Area ratio is 2:3, so Ao: OC = 2:3, so triangle AOB is similar to triangle doc. Area ratio is 2:3, area ratio is 4:9, so s triangle doc = 22.5, so the total is 10 + 15 + 15 + 22.5 = 62.5