Question

The area of a trapezium is 1344 cm2

and its height is 28 cm. If one of the

parallel sides is 57cm, then the other side is​

Answer 1

Answer:

39

Step-by-step explanation:

1/2×h(a+b)= 1344cm2 ( centimeter square)

1/2×28(57+x)=1344cm2

1×14 (cancellation)(57+x)=1344cm2

14(57+x)=1344cm2

57+x=1344/14

57+x=96

x=96-57

x=39

Answer 2

Answer:

39 cm

Step-by-step explanation:

Area of trapezium formula is A=1\2(a+b)h

where a and b are length of parallel sides

given A=1344cm2 ,a=57cm and h=28

using above formula we get b=39cm