The ratio of the sides of two similar parallelograms is 4:9. The perimeter of the larger parallelogram is 42.3 cm. The perimeter of the smaller parallelogram is cm

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Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?