That depends on what information that you do know. If you have length of a leg (I'm not sure if that is the correct term or not) and distance from that leg's vertex to a point directly below the other 'vertex', then you have a little right triangle and can use the Pythagorean Theorem (a2 + b2 = c2), where c is the longest side. So in this case you know b and c, so a2 = c2 - b2.
Area of a trapezoid: 0.5*(sum of its parallel sides)*height
Area of a trapezoid = 0.5*(sum of parallel sides)*height
For a parallelogram, take the base times the height. For a trapezoid, take the smaller base and times it by the height.
Area of a trapezoid: 0.5*(sum of parallel sides)*height
A trapezoid is a polygon. Therefore, a trapezoid has no height
Area of a trapezoid: 0.5*(sum of its parallel sides)*height
Height of trapezoid = 2*area/sum of parallel sides
The height of the trapezoid is also needed to find its area which is as follows:- Area of a trapezoid = 0.5*(sum of bases or parallel sides)*height
Area of a trapezoid = 0.5*(sum of parallel sides)*height
If the lengths of the bases are also given then rearrange the area of the trapezoid formula so that the height is the subject.
To measure the area of a trapezoid, you can use the formula: Area = (1/2) * (sum of the lengths of the parallel sides) * (height). Simply add the lengths of the two parallel sides together, multiply by the height, and then divide by 2 to find the area of the trapezoid.
Height = Area*2/sum of parallel sides
The area of a trapezoid is equal to the height, multiplied by the average of the two widths.
For a parallelogram, take the base times the height. For a trapezoid, take the smaller base and times it by the height.
Area of a trapezoid: 0.5*(sum of parallel sides)*height
A trapezoid is a polygon. Therefore, a trapezoid has no height
Area = 1/2*(sum of parallel sides)*height