# Area and Perimeter

# Isosceles Triangle

Calculate the area and perimeter of an isosceles triangle. This calculator uses feet for measurements.

Isosceles Triangle = a triangle that has two equal length sides.

### Isosceles Triangle Area and Perimeter

#### Calculation

- base length in feet and or inches
- height in feet and or inches
- decimal precision, the number of digits after the decimal point

#### Results

- length of diagonal in decimal feett
- the area of the isosceles triangle in decimal square feet
- area in square feet and inches
- the area in decimal square inches
- the area in square inches
- the area in square metres
- the perimeter of the isosceles triangle in decimal feet
- the perimeter in lineal feet and inches
- the perimeter in decimal inches
- the perimeter in inches
- the perimeter in metres

##### Formula

A = bh/2
P =a*2+b
where A is the area of the ellipse
b the length of the base
h the height
P the perimeter of the triangle
a the length of a leg

##### Conversions

one square foot ( ft²) = 144 square inches (in²)
one square inch (in²) = 0.00694444444444443 square feet (ft²)
one square foot ( ft²) = 0.09290304 square metres (m²)
square inch (in²) = 0.00064516 square metres (m²)

### Area and Perimeter of Various Shapes

### Changing the shape of an Area

### Acreage or Building Lot Calculators

### Stadium Calculators