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Sector area
A = ½ r²θ
Where: A = angle A, r = radius, θ = angle
Solved example
Given: r = 7, theta = 5
Find: A (angle A)
- Formula: A = r²·θ/2
- Substitute the values: A = 5·7²/2
- Result: A = 122.5
Answer: A = 122.5
Calculator
How to calculate Sector area
- Write down the formula: A = ½ r²θ.
- Note the known values (r, θ).
- Substitute them and simplify to find A.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Sector area?
The formula is A = ½ r²θ, where A = angle A, r = radius, θ = angle.
What is Sector area when r = 7, theta = 5?
A = 122.5. Substitute the values into A = ½ r²θ and simplify.