Question

What is the length of the diagonal for the given rectangular prism to the nearest whole unit?
A)8 cm
B)10 cm
C)11 cm
D)12 cm

Answer 1

you didn't give a rectangular prism

Answer 2

but you would create a triangle by drawing a diagonal line corner to corner and use pythagoras to work out the length

Answer 3

sorry:\

Answer 4

@amorfide

Answer 5

you need to work out the corner to corner of the front square

you know height is 10
length is 10 so you can do pythagoras to work out corner to corner of the face


you will get 10^2 + 10^ = c^2
root200 will be c
the diagonal=10root2

now you can make a triangle

you know width is 4 so draw a line along the width line from the top left corner where the yellow line is
and draw a line from corner of the square to the bottom right where the line is to get a triangle that looks like