Mathematics
Tonycoolkid21:

help

Tonycoolkid21:

Tonycoolkid21:

AZ:

So surface area means you're finding the area of each shape and adding it up what is the area of the square that has sides of 12? and what is the area of the triangle if it has a base of 12 and a height of 8? (and keep in mind that we have 4 triangles)

Tonycoolkid21:

do i mutiply

AZ:

well yes area of a square = side * side and the side is 12 so what is the area of the square?

Tonycoolkid21:

12?

AZ:

no area of square = side * side and the side is 12 so area = 12 * 12 = ??

Tonycoolkid21:

144

AZ:

good, now the area of a triangle do you know the formula to find the area of a triangle?

Tonycoolkid21:

A=hbb 2

AZ:

I think you meant area = 1/2 * base * height and the base is 12 and the height is 8 so what is the area?

Tonycoolkid21:

96

AZ:

what about the 1/2 you forgot to multiply by 1/2

Tonycoolkid21:

did i get it right?

AZ:

no what is 1/2 * 12 * 8 = ??

Tonycoolkid21:

48

AZ:

there you go and remember we have 4 triangles? so 48 + 48 + 48 + 48 which is the same thing as 48 * 4 = ??

Tonycoolkid21:

192

AZ:

and now add the area of the square which is 144 144 + 192 = ??

Tonycoolkid21:

336

AZ:

Tonycoolkid21:

thx master az

AZ:

You're welcome

Tonycoolkid21:

so o decimal point

AZ:

Yup, there is none

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