Question

Sum of the parallel sides of a trapezium is 18cm and height is 3cm.Find its area?

Answer 1

Answer:

know that area of trapezium = 1/2 × height × (a + b)

Where, a = length of the side parallel to the base

b = base

⇒ 18 sq.cm = 1/2 × 3 × (a + 5)

⇒ 36 = 3a + 15

⇒ 21 = 3a

⇒ a = 21/3 = 7 cm

∴ Length of the side parallel to the base is 7 cm

Step-by-step explanation:

hope it will help you

Answer 2

Answer:

27cm^2

Step-by-step explanation:

Given:

Sum of parallel sides=18cm

Height=3cm

Area of trapezium=½(sum of parallel sides)x height

=½x18x3

=(18x3)/2

=54/2

=27cm^2