Skip to content
Philoid
Browse Saved
Back to chapter
Maths
21. Areas of Bounded Regions
Home · Class 12 · Maths · Ref. Book · 21. Areas of Bounded Regions
Prev
Next
Q20 of 123 Page 22

The area bounded by the curve y = 4x – x2 and the x-axis is

y = 4x – x2


This is a parabola with negative co-efficient of x2, i.e., it’s a downward parabola.


So, area A enclosed is the area of the peak of the parabola above the x – axis.


We need to find the bounds of this peak.


Now, at the point where the peak starts/ends, y = 0,


i.e., 4x – x2 = 0


⇒ x(4 – x) = 0


⇒ x = 0 or x = 4


∴ A =


=


= [32 – 64/3]


= 32/3 sq. units (Ans)

More from this chapter

All 123 →
18

The area between x-axis and curve y = cos x when 0 ≤ x ≤ 2π is

19

Area bounded by parabola y2 = x and straight line 2y = x is

21

Area enclosed between the curve y2 (2a – x) = x3 and the line x = 2a above x-axis is

22

The area of the region (in square units) bounded by the curve x2 = 4y, line x = 2 and x-axis is

Questions · 123
21. Areas of Bounded Regions
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 1 2 3 4 1 2 3 4 5 6 7 8 1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved