# Circle + expression of a variable from the formula - math problems

#### Number of problems found: 125

- Area of a circle

The circumference of the circle is 150.72 centimeters. Calculate the area of the circle. - Circle - AG

Find the coordinates of circle and its diameter if its equation is: ? - Circle r,D

Calculate the diameter and radius of the circle if it has length 26.59 cm. - Circle's chords

In the circle there are two chord length 30 and 34 cm. The shorter one is from the center twice than longer chord. Determine the radius of the circle. - Circle - simple

The circumference of a circle is 198 mm. How long in mm is its diameter? - Circle chord

Calculate the length of the chord of the circle with radius r = 10 cm, length of which is equal to the distance from the center of the circle. - Equation of circle 2

Find the equation of a circle that touches the axis of y at a distance of 4 from the origin and cuts off an intercept of length 6 on the axis x. - Inscribed circle

A circle is inscribed at the bottom wall of the cube with an edge (a = 1). What is the radius of the spherical surface that contains this circle and one of the vertex of the top cube base? - Inscribed circle

The circle inscribed in a triangle has a radius 3 cm. Express the area of the triangle using a, b, c. - Circle annulus

There are 2 concentric circles in the figure. Chord of larger circle 10 cm long is tangent to the smaller circle. What are does annulus have? - Hexagon in circle

Calculate the radius of a circle whose length is 10 cm greater than the circumference of a regular hexagon inscribed in this circle. - Circle

How big is an area of a circle if its circumference is 80.6 cm? - Radius of the circle

Calculate the radius of the circle whose length is 107 cm larger than its diameter - Concentric circles

There is given a Circle K with a radius r = 8 cm. How large must a radius have a smaller concentric circle that divides the circle K into two parts with the same area? - Perimeter of the circle

Calculate the perimeter of the circle in dm, whose radius equals the side of the square containing 0.49 dm^{2}? - Equation of circle

find an equation of the circle with indicated properties: a. center at (-3,5), diameter 20. b. center at origin and diameter 16. - Perimeter to area

Calculate the area of a circle with a perimeter of 15 meters. - Find parameters

Find parameters of the circle in the plane - coordinates of center and radius: ? - Quarter circle

What is the radius of a circle inscribed in the quarter circle with a radius of 100 cm? - Quarter of a circle

Calculate the circumference of a quarter circle if its content is S = 314 cm^{2}.

Do you have an interesting mathematical word problem that you can't solve it? Submit a math problem, and we can try to solve it.

Circle Problems. Expression of a variable from the formula - math problems.