What is the surface area of a rectangular prism with the Length being 14cm, the Width being 21cm, and the Height being 5cm?

Look it up frl yo answer will be there trust me

just copy and paste

Step-by-step explanation:

=2(LW+ wh +HL)

=2(14*21+21*5+5*14)=938 cm square

55/i dont know i do it for the points

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