Find The Other Parallel Side.
The area of a trapezium shaped field is 480 m2, the height is 15 m and one of the parallel side is 20 m. Find the other parallel side.
- 44 m
- 20 m
- 84 m
- 150 m
Answer: (1) 44 m
Explanation:-
Given-
The parallel side of a trapezium = 20 m
Let the another parallel side of a trapezium = X m
Height of a trapezium = 15 m
Area of a trapezium = 480 m square
Formula-
Area of a trapezium = h (sum of parallel sides)/2
Where, h = height of a trapezium.
Then, 480 = 15 x (20 + X)/2
480 x 2 = 15 x 20 + 15 X
15 X = 960 – 300
X = 660/15
X = 44 m
Hence, the other parallel side of a trapezium is 44 m.
