What is the length of the diagonal for the rectangular prism to the nearest whole unit?

LENGTH:12 cm
WIDTH:4 cm
HEIGHT:9 cm

A.16 cm
B.15 cm
C.13 cm
D.10 cm

i thinks its c. i think...

As you know, the diagonal of a 2-D rectangle is

√(x^2+y^2)

Similarly, the diagonal of a rectangular prism is

√(x^2+y^2+z^2)

So, since you have x,y,z just plug them in:

√(144+16+81) = √241 = 15.52

Looks like B to me.

It would be A because anything rounding for the decimals a thing 5 or up changes the number yw

i really need help please. i'll be patient but i am in a little bit of a rush.

15.52 is does not equal 15 it equals 16 because .52 rounds up to 1

It kinda seems like it's 16 but that's just me

I believe the answer is A because you have round to the nearest whole unit.

You would round up to 16 if its 15.52, so wouldn't it be A?

so is it A?? or B??

my bad the answer is D i didnt divide right

your not the real steve lol his name was capital we arent dumb