Shape Perimeter Formula Area Formula Explanation

Square

S1+S2+S3+S4

or4S

A = l * w

A=s2

All sides are equal.

Rectangle

2l + 2w

or 2(l +w)or l + l + w + w

A= l * w 2 pairs of equal opposite parallel sides.

Triangle

S1+S2+S3 A = 1/2bhb=baseh=height

The base & height are perpendicular. 2 triangles placed together form a parallelogram.

Parallelogram

S1+S2+S3+S4 A=b*h The base & height are perpendicular.

Circle

Circumference2πr or πd

r=radiusd=diameter

πr2

π=3.14 or 22/7

Geometry TopDoc

Shape Surface AreaVolume=Bh

B=area of the base

Triangular Prism 2(area of base) + (perimeter of base)hSA = 2B + Ph

SA =2(1/2bh) + (a+b+c)h

A triangular prism always has 2 triangular bases/faces and 3 rectangular faces.

V=BhB=1/2bhSoV=(1/2bh)h1st h is the height of the triangle, 2nd h is the height of the prism

Rectangular Prism SA = 2B + Ph2(lw) + (a+b+c+d)h

V=BhB=lwV=lwh

Cylinder 2(area of base) + (area of the rounded rectangle)SA = 2B + Ph

SA = 2πr2 + 2πrh

V=BhB=πr2

V=πr2h

Square Pyramid area of base + 4(area of other triangular faces)

SA= lw + 4(1/2bh)

V=1/3BhB=s2

V=1/3s2h

Cone V=1/3BhB=πr2

V=1/3πr2h