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Mathematics 7 Online
rxcklesskaisher:

The net of a pyramid is shown below: The surface area of the solid is square inches

rxcklesskaisher:

1 attachment
rxcklesskaisher:

@AZ

AZ:

To find the surface area, all you have to do is find the area of each shape and add it up We have a square with sides 7 What is the area of the square? Area of square = side * side

rxcklesskaisher:

7*7?

AZ:

yes, multiply it

rxcklesskaisher:

49

AZ:

now what's the area of one of the triangles it has a base of 7 the height is 14 area of triangle = 1/2 * 7 * 14 area = ??

rxcklesskaisher:

49??

AZ:

exactly!! and how many triangles are there?

rxcklesskaisher:

4

AZ:

so that means we have to multiply it by 4 so we get the area of all 4 triangles what is 49 * 4

rxcklesskaisher:

196

AZ:

and now don't forget to add the area of the square so 196 + 49 = ?? that's going to be your final answer which is the surface area of the pyramid

rxcklesskaisher:

245

AZ:

Good job! That's your final answer

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