Surface Area: Surface area of a 3 dimensional shape is just the sum of the area of each 2 dimensional surface/face of the shape. To find the surface area of a cube, find the area of one face of the cube and multiply it by 6 (the number of faces) Find the surface area of this cube (show your work!) 6cm 6cm 6cm Can you come up with a formula for finding the area of a cube?​

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

what are your numbers actually saying? they are spaced out.