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In continuous cultures, cell growth is maintained by continuous replenishment of sterile nutrient medium.
The diagonal of the floor of a rectangular closet is 7.5 ft. The shorter side of the closet is 4.5 ft.
What is the area of the closet in square feet?
The area of a circle got increased by 22 cm² when the radius was increased by 1 cm. d by 1 cm. What was the original radius?
The area of a circle is 1.54 cm2. Find the perimeter of the minor sector that is subtended by an angle of 90o. (take π = 22/7)