Question: 47. A rectangle has perimeter 20 m. Express the area of the rectangle as a function of the length of one of its sides. 48.

47. A rectangle has perimeter 20 m. Express the area of the rectangle as a function of the length of one of its sides.
48. A rectangle has area 16 m . Express the perimeter of the rectangle as a function of the length of one of its sides.
49. Express the area of an equilateral triangle as a function of the length of a side.
50. Express the surface area of a cube as a function of its volume.
51. An open rectangular box with volume 2 m has a square base. Express the surface area of the box as a function of the length of a side of the base.

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47 Let the length and width of the rectangle be L and W Then the perimeter is 2L 2W 20 2L 2 10L Thus ... View full answer

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