A rectangle is 6 more than 4 times as long as it is wide. If the perimeter is 42, how long is the rectangle?

Solution

2(4x + 6) = 8x + 12

8x + 12 + 2x = 42

10x + 12 = 42

10x = 30

x = 3

Therefore the width is 3cm.

3cm * 2 = 6

42 - 6 = 36

36 / 2 = 18

Therefore the length is 18cm

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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answer. d.289 hope that