Algebra 1 Common Core Student Edition, Grade 8-9

Formulas of Geo m et r y

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You w ill use a num ber

of geometric formulas

as you w ork through your

algebra book. Here are

some perimeter, area,

and volume formulas.

IT

_

w

I]— 1 L

r =L-i1—1=

P— 2i + 2w

A = ew

Rect an g le

P — As

A = s 2

Sq u a r e

A = VT2

Ci r cl e

A = \b h

Triang le

A = bh

Par allelo g r am

V=\Bh

V=\ 7rr2h

Ri g h t Co n e

V = jB h

Py r am id

\/= f-TT/-3

Sp h e r e

A = j(b ] + b2)h

Trap ezo id

V= Bh

V = j r r 2h

Ri g h t Cy l i n d e r

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