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zhenek [66]
3 years ago
15

Find the area of the largest trapezoid that can be inscribed in a circle of radius 1 and whose base is a diameter of the circle.

Mathematics
1 answer:
ki77a [65]3 years ago
4 0
<span>Answer:
        let x = shortest base of the trapezoid
   A = h (x/2 + r) = âš(r² - (x/2)²) (r + x/2)
   = âš(1 - (x/2)²) (1 + x/2) .... if r = 1
   dA/dx = (2 - x - x²) / (2âš(4 - x²))
   = 0 at x = 1 .... which is a relative maximum because d²A/dx² < 0
   A = (3/4) âš3</span>
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