Question

The area of this trapezium is 200cm2.
Work out
x
.

Answer 1

Answer:

area of trapezium = 1/2 *height *( sum of parallel sides)

200 = 1/2 * 10 * (12 + x)

(200*2)/10=12 + x

40= 12+x

x=40-12

x=28

Answer 2

Answer:

x = 28 cm

Step-by-step explanation:

Area=200 cm²

Area=1/2 X {Sum of Parallel sides} X Height

200 = 1/2 X { 12 + x } X 10

200= 5{12+x}

200=60 + 5x

200-60= 5x

140 = 5x

140/5 = x

28=x