*

(A=bh)

Square

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(eginarrayl A=b h \ A=s^2 endarray)

Parallelogram

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(A=bh)

Triangle

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(A=dfrac12 b h)

Circle

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(A=pi r^2)

Trapezoid

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(A=dfrac12 hleft(b_1+b_2 ight))


Surconfront Area Formulas

Variables:

(SA) = Surface Area

(B) = location of the base of the figure

(P) = perimeter of the base of the figure

(h) = height

(s) = slant height

(r) = radius

Table 6.5.2: Surface Area formulas

Geometric Figure

Surface Area Formula

Surchallenge Area Meaning

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(S A=2 B+P h)

Find the area of each confront. Add up all locations.

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(S A=B+dfrac12 s P)

Find the location of each challenge. Add up all areas.

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(S A=2 B+2 pi r h)

Find the area of the base, times 2, then add the locations to the areas of the rectangle, which is the circumference times the height.

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(S A=4 pi r^2)

Find the location of the excellent circle and also multiply it by 4.

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(V=dfrac13 B h)

Find the location of the base and multiply it by 1/3 of the elevation.

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(V=dfrac43 pi r^3)

Find the location of the good circle and also multiply it by the radius and also then multiply it by 4/3.