*This refers to a trapezoid (US) or trapezium(UK)*
A = h x [(b1+b2) /2 ]
The area is 44.8 square centimeters (average width x height)
Finding the average width : (7.4 + 8.6) / 2 = 8
Multiply width by height : 8 x 5.6 = 44.8
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usually in a quadrilateral (four-sided shape) you multiply the height by width In a triangle, the height by width then divide by 2. This is because a triangle is mathematically always half the area of the rectangle. In a trapezium or trapezoid in some countries, its the top length added to the bottom length which is then divided by two multiplied by the length top to bottom. But always remember the height you multiply it with is the straight top to bottom length not the side length.
A = 1/2 (b1 + b2) h b1 = base 1 (usually the bottom) b2 = base 2 (usually the top) h = height
A trapezoid has one height: vertical measurement from top to bottom, and two bases: horizontal measurement on top and horizontal measurement on bottom. To find the area, you add the two bases together, multiply that by the height, and then divide by 2.
It is base*vertical distance between top and bottom (the perpendicular height).
Without information aboutthe top of the trapezium andthe relative positions of the triangle and trapeziumit is not possible to provide an answer.