Question

the area of a trapizium shaped field is 480m,the distance between two parellel sides is 15m and one of the parellel side is 20m. find the other parellel side
(a)20m
(b)44m
(c)54m
(d)64m

Answer 1

let other parallel side be x
Area of trapezium = 480 m^2
1/2×( sum of parallel side) × height = 480
1/2×x+20×15= 480
x+20= 480× 2/15
x+20= 64
x= 64-20
x = 44 m

Hence, length of another parallel side is 44 m.

Answer 2

Hey Friend ☺

Given

area of trapezium = 480 m^2

height = 15m

one of the parallel side is 20m

To Find

Other parallel side = ?

Solution

Let the other parallel side be x

We know that

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

480 = 1/2 × ( 20 + x ) × 15

20 + x = 480 × 2/15

20 + x = 32 × 2

20 + x = 64

x = 64 - 20

x = 44

so the lenght of parallel side is 44 m

so choose option ( b ) 44 m

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