Question

Area of a trapezium is 31.5 sq cm
and its height is 4.5cm If the
length of one of its parallel sides.
is 8.7cm
, then find the length of
the other side​

Answer 1

Answer:

Area of trapezium=31.5cm²

height=4.5cm

a=8.7

b=x

Area of trapezium=½h(a+b)

31.5=½×4.5(8.7+b)

31.5=2.25(8.7+b)

31.5/2.25=8.7+b

14=8.7+b

14-8.7=b

5.3 is the length of other side

Answer 2

Answer:

the length of other side = 5.3 cm

Step-by-step explanation:

Given:

Area of trapezium = 31.5 sq cm

height = 4.5 cm

one side of its parallel sides = 8.7 cm

Let the other side be x

Area of trapezium = ½ × sum of parallel sides × height

31.5 = ½ × (8.7 + x) × 4.5

31.5 = 2.25 (8.7+x)

31.5/2.25 = (8.7 + x)

14 = 8.7 + x

14-8.7 = x

5.3 = x

the length of other side is 5.3 cm

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