geometric quantities

4 US customary units used to measure length

• inches (in)

• feet (ft)

• yards (yd)

• miles (mi)

4 metric units used to measure length

• millimeters (mm)

• centimeters (cm)

• meters (m)

• kilometers (km)

how to calculate perimeter

add all the sides of shape together

circumference formula

c = 2(pi)r or c = (pi)D

area of a square formula

A = L x L = L²

area of a rectangle formula

A = L x W

area of a triangle formula

A = ½ x b x h

area if a parallelogram formula

A = h x b

area of a trapezoid formula

A = ½ x h x (b₁ + b₂)

area of a circle formula

A = pi x r²

area of a rhombus formula

A = ½ x d₁ x d₂

volume of a rectangular prism

V = l x w x h

volume of a triangular prism

V = (b x h x l)/2

volume of a cylinder

V = (pi)r²h

volume of a cone

V = [(pi)r²h]/3

volume of a rectangular pyramid

V = (l x w x h)/3

volume of a sphere

V = (4/3)(pi)r³