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Area of a Right Triangle
A = ½ab
Where: A = Area, a = a, b = b
Use the same units for all lengths (e.g. all in cm); areas come out in cm², volumes in cm³.
Solved example
Given: a = 7, b = 5
Find: A (Area)
- Formula: A = a·b/2
- Substitute the values: A = 5·7/2
- Result: A = 17.5
Answer: A = 17.5
Calculator
How to calculate Area of a Right Triangle
- Write down the formula: A = ½ab.
- Note the known values (a, b).
- Substitute them and simplify to find A.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Area of a Right Triangle?
The formula is A = ½ab, where A = Area, a = a, b = b.
What is Area of a Right Triangle when a = 7, b = 5?
A = 17.5. Substitute the values into A = ½ab and simplify.