This is urgent answer if possible!

to the nearest tenth, find the approximate amount of plastic covering the outside of the cd case.

Easy bruh... you better give me brainliest tho.

You would need 64.5in of plastic covering the outside of the CD case.

Step-by-step explanation:

To find how much plastic is on the CD, we need to find the surface area. To find that we just add up the area of all the faces. The formula of area of a rectangle is height x base.

5.6 x 5 x 2 = 56 in^2

5.6 x 0.4 x 2 = 4.48 in^2

5 x 0.4 x 2 = 4 in^2

56 + 4.48 + 4 = 64.48in^2

answer: ratio of volume of cone (with 3 times the height and equal diameter) to volume of cylinder is 2 to 1. the value of π is not used.

step-by-step explanation:

radius is diameter/2 = 4.

area of circle is π r^2.

volume of cylinder is height × area of base = hπr^2 = 3(4^2) π = 48π cubic inches.

not knowing the formula for volume of cone, i calculate it using calculus (which is for calculating things).

volume of cone is integral 0 to h area(y) dy. area(y) is π r(y)^2. r(y) runs r to zero as y runs zero to h, r(0) = r, r(h) = 0.

r(y) = r - r/h y

area(y) = π (r - r/h y)^2 = π (r^2 - 2r^2y/h + r^2y^2/h^2) = π r^2(1-2y/h+y^2/h^2)

antiderivative area(y) = π r^2 (y-y^2/h+y^3/(3h^2))

integral 0 to h = π r^2(h-h^2/h+h^3/(3h^2) - (0)) = π r^2(h - h + h/3) = π r^2(h/3) = π/3 r^2 h

volume of this cone is π/3(4^2)18 cubic inches.

= 6 16 π = 96π cubic inches.

cone has twice the volume, 96/48.

cone height is 6 times the cylinder.

ratio of volume formula: π r^2 cancels.

cone over cylinder ratio is 6h/3 to h, 2 to 1.