# Calculate area of trapezoid

## ( Equivalent to: surface area of trapezoid )

In next fields, kindly type the dimensions of your shape in the text box under title [ Unknowns: ]. After you type your value, click "CALCULATE" button; the answer will be automatically calculated and displayed in the text box under title [ Answer: ]. Also, you will be able to animate your shape through buttons under the below figure.

## How to Calculate Area Of Trapezoid

### Example: What is the area of trapezoid with upper base = 16 units, lower base = 39 units and height = 10 units?

As;

area of trapezoid = (upper base+lower base)/2*height

By substituting the above given data in the previous function;

(i.e.) = (16+39)/2*10

### Practice Question: Calculate area of trapezoid for the following problems:

N.B.: After working out the answer of each of the next questions, click adjacent button of see the correct answer.

( i ) upper base = 7 units, lower base = 29 units and height = 21 units

( ii ) upper base = 10 units, lower base = 39 units and height = 16 units

( iii ) upper base = 23 units, lower base = 34 units and height = 22 units

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