## anonymous one year ago HELP PLZ WILL MEDAL AND FAN Mr. McKenzie built a doorstop out of a block of wood. What is the surface area of the doorstop? The doorstop is a triangular prism that has triangles with a base of five centimeters, height of twelve centimeters, and slant height of thirteen centimeters. The rectangles connecting the triangles are four centimeters wide.

1. anonymous

|dw:1436979992328:dw|

2. anonymous

@DarkMoonZ

3. anonymous

ninety-six square centimeters one hundred twelve square centimeters one hundred eighty square centimeters two hundred forty square centimeters

4. Kash_TheSmartGuy

Surface Area=(Perimeter*Height)+(Area of The Base*2)$S=(P*H)+(A*2)$

5. Kash_TheSmartGuy

$S=[(5+12+13)*4]+[2*(\frac{ 1 }{ 2 }*12*5)]$$S=120+60$$S=180cm ^{2}$

6. Kash_TheSmartGuy

7. anonymous

thank you so much

8. Kash_TheSmartGuy

np :)