Question

( Picture Below ) What is the surface area of the regular pyramid pictured below?

Answer 1

The base is a square with dimensions 12 by 12. What is the area of the base?

The sides are triangles with base 12 and height 7. There are 4 of them. Find the area of 1, multiply by 4, add to the area of the base. The total is your surface area.

Area of a triangle = 1/2 * base * height
Area of a square = length * width

Answer 2

give me a sec

Answer 3

Would it be 312?

Answer 4

?

Answer 5

\[\boxed{\huge\color{red}\checkmark}\]

Answer 6

Thanks for the help!

Answer 7

One thing about the drawing UncleRhaukus whipped up — you might be tempted to think that the whole thing is a square and try to work out the area that way. Don't fall into the trap unless you know that is true! You could have a rectangular pyramid where unfolded it is not a square...for a little exercise, try to work out the dimensions it would be if it were a square...

Answer 8

and then decide how tall the pyramid would be :-)