- #1
Saeed.z
- 28
- 1
i tried hard to solve this question but i got a complicated answer
any hint ?
http://www.gulfup.net/uploads/13634557771.gif
thanks
any hint ?
http://www.gulfup.net/uploads/13634557771.gif
thanks
Saeed.z said:i tried hard to solve this question but i got a complicated answer
any hint ?
http://www.gulfup.net/uploads/13634557771.gif
thanks
Chestermiller said:Label the acute angle θ. Using the right triangle on the bottom, express the radius in terms of θ. Draw a line from the intersection of the secant with the circle arc, running to the intersection of the vertical diameter with the circle arc. This produces another right triangle, with the diameter as its hypotenuse. Express the diameter 2r in terms of θ using this larger triangle.
Chet
The formula for calculating the area of a circle is A = πr², where A is the area and r is the radius of the circle.
To find the radius of a circle if you know the area, you can use the formula r = √(A/π), where r is the radius and A is the area.
Yes, as long as the unit of measurement is consistent for both the radius and the area. For example, if the radius is measured in inches, the area should also be measured in square inches.
The value of π (pi) is approximately 3.14159 and it is a mathematical constant that represents the ratio of a circle's circumference to its diameter. It has been used in mathematics for thousands of years and is an irrational number.
Yes, you can use the area of a circle to find the circumference by using the formula C = 2πr, where C is the circumference and r is the radius of the circle.