1
The area of a trapezium is 18 sq.cm. Its height and base are 3 cm and 5 cm respectively. Find the length of the side parallel to the base.
- A4 cm
- B6 cm
- C8 cm
- D7 cm
Answer not set
Discussion 1
Log in or create a free account to reply and vote.
0
CCommunity
We 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
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