Spike's Calculators

# Right-Angled Triangle Calculate the area and perimeter of an right-angled triangle. This calculator uses feet and or inches for measurements.

Right-angled triangle = a triangle where one of the inside angles equals 90° ### Right Angled Triangle Area and Perimeter

Length a ft in n
d
Length b ft in n
d
Decimal Precision

#### Results:

Diagonal c Length ft
Diagonal c Length in
Diagonal c Length ft in
###### Area of the Right Angled Triangle
Decimal Square Feet ft²
Square Feet ft² in²
Decimal Square Inches in²
Square Inches in²
Square Metres
###### Perimeter of the Right Angled Triangle
Decimal Feet ft
Feet ft in
Decimal Inches in
Inches in
Metres m

#### Calculation

1. length a in feet and or inches
2. length b in feet and or inches
3. decimal precision, the number of digits after the decimal point

#### Results

1. the length of the diagonal in decimal feet
2. the length of the diagonal in inches
3. the length of the diagonal in feet and inches
4. the area of the right-angled triangle in decimal square feet
5. area in square feet and square inches
6. the area in decimal square inches
7. the area in square inches
8. the area in square metres
9. the perimeter of the right-angled triangle in decimal feet
10. the perimeter in lineal feet and inches
11. the perimeter in decimal inches
12. the perimeter in inches
13. the perimeter in metres
##### Formula
```A = ab/2
P = a+b+√a²+b²
where A is the area of the ellipse
a the length of a side
b the length of the other side
P the perimeter of the triangle
```

##### 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)
```