Can you me on this it is hard

288 square centimeters

Step-by-step explanation:

The surface area is the area of all the surfaces of the prism.

There is

Top Triangle

Bottom Triangle

Front Rectangle

Side Rectangle

Another Side Rectangle

Note:

Area of Triangle = 0.5 * base * height

Area of Rectangle = base * height

Lets find each area and add them up.

Top Triangle = 0.5 * 9 * 12 = 54

Bottom Triangle = 0.5 * 9 * 12 = 54

Front Rectangle = 15 * 5 = 75

Right Rectangle = 12 * 5 = 60

Left Rectangle = 9 * 5 = 45

Total Surface Area = 54 + 54 + 75 + 60 + 45 = 288 square centimeters

b 1: 45 am

step-by-step explanation:

its that because if it was in the pm it would be 1345

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.