-
Area of the trapezium formed by x-axis; y-axis and the lines 3x + 4y = 12 and 6x + 8y = 60 is:
-
- 37.5 sq. unit
- 31.5 sq. unit
- 48 sq. unit
- 36.5 sq. unit
Correct Option: B
As per the given question , we have
For 3x + 4y = 12,
By putting x = 0, y = 3
By putting, y = 0, x = 4
For 6x + 8y = 60,
By putting x = 0, y = | ||
2 |
By putting y = 0, x = 10
∴ Area of ∆ OCD = | x OD x OC | |
2 |
Area of ∆ OCD = | x 10 x | = | |||
2 | 2 | 2 |
∴ Area of ∆ OAB = | x OB x OA = | x 4 x 3 = 6 | ||
2 | 2 |
∴ Area of trapezium = | - 6 | |
2 |
Area of trapezium = | = | = 31.5 sq. unit | ||
2 | 2 |
