Question

the area of a trapezium is 56cm square and the length of one of its parallel side is 12cm and its height is 4cm . find the length of the other parallel side​

Answer 1

Answer:

$area \: of \: trapezium \: = \frac{1}{2} \: h(a + b) \\ \\ 56 = \frac{1}{2} \: 4(12 + b) \\ \\ \frac{112}{4} = 12 + b \\ \\ 28 - 12 = b \\ \\ b = 16$

Therefore the other parallel side is 16cm

Answer 2

Answer:

16..

Step-by-step explanation:

let other side be s.

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

56=1/2(12+s)*4

56*2/4=(12+s)

112/4=12+s

28=12+s

28-12=s

16=s

so,other parallel side is 16.

I hope you understand...