Question

Mr. McKenzie built a doorstop out of a block of wood. What is the surface area of the doorstop?

Answer 1

What's the shape?

Answer 2

triangular prism, trapezoidal prism, ... spandrel?

Answer 3

a triangular prisim.

Answer 4

yes

Answer 5

the base is 12cm height 5 cm and with is 4 cm

Answer 6

To find surface area, you need to add the areas of the five faces.

Answer 7

what

Answer 8

there are two triangular faces, and three rectangles.

Answer 9

Assuming the cross-section is a right triangle, you can use Pythagoras' Theorem to find the length of the hypotenuse of the triangle.

Answer 10

Divide it up into the 5 faces and find the area of each one, then add them all up.

Answer 11

thanks

Answer 12

but i am still lost so ughhh :(

Answer 13

this is how itblooks on the paper