## Area of a Square

Take measurement 1 (M1) in feet

Take measurement 1 (M2) in feet

Multiply M1 x M2 = SQUARE FEET

Note: If measurements are in inches,

multiply M1 x M2 then divide by 144 = SQUARE FEET

Example: M1 = 15′-0″ and M2 = 15′-0″

METHOD USING CALCULATOR

15 x 15 = 225 square feet

## Area of a Rectangle

Take measurement 1 (M1) in feet

Take measurement 1 (M2) in feet

Multiply M1 x M2 = SQUARE FEET

Note: If measurements are in inches,

multiply M1 x M2 then divide by 144 = SQUARE FEET

Example: M1 = 50′-0″ and M2 = 15′-0″

METHOD USING CALCULATOR

50 x 15 = 750 square feet

## Area of a Circle

Take measurement D in feet (D=diameter)

Divide measurement D by 2 = R (R=radius)

Multipy R x R x 3.14 = SQUARE FEET

Method Using Calculator

Step 1: 30 / 2 = 15

Step 2: 15 x 15 x 3.14 = 706.5 square feet

## Area of a Triangle

Take measurement H in feet (H=height of triangle)

Take measurement B in feet (B=base or bottom of triangle)

Divide B by 2 then multiply by H = SQUARE FEET

Example: H = 20′-0″ and B = 10′-0″

METHOD USING CALCULATOR

Step 1: 10 / 2 = 15

Step 2: 5 x 20 = 100 square feet