The base of a rectangular prism is 40 centime- 1
ters long and 4 centimeter wide. The height
of the prism is 2 centimeters.(if anyone can help)

5x+10 is the correct one

hope this

answer: options

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24