Question

if the area of trapezium is 28cm² and one of its parallel side is 6cm find the other parallel side of its altitude is 4cm

Answer 1

Answer:

8cm

Step-by-step explanation:

let the parallel  side = x

are of trap = 1/2 *(sum of parallel sides)*height

28=1/2*(6+x)*4

28*2/4=6+x

14=6+x

8=x

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Answer 2

Answer:

other parallel side is 8cm

Step-by-step explanation:

area of trapezium=

1/2×sum of parallel sides ×altitude

28=1/2×(6+x)×4

28÷1/2=(6+x)×4

28×2/1=(6+x)×4

56=(6+x)×4

56÷4=6+x

56×1/4=6+x

14=6+x

14-6=x

8=x