A rectangular prism has 6 surface.
A right triangle has one angle that's 90° and a corner that looks like an L. Obtuse triangles have one angle that's greater than 90°. In acute triangles, all the angles are less than 90°.
Step-by-step explanation:
Answer:
n=19
d=12
$225n+$250d=
$225(19)+$250(12)=
4275+3000
=7275
Step-by-step explanation:
The surface are would be 81 bc the base area is 9 and you have four triangles with the area of 18. Add them all up and you get 81
Answer: 40x+18
Step-by-step explanation:
