# The area of circle problems

#### Number of problems found: 151

- Circle area

Calculate the circle area with a radius of 1.2 m. - Circle simple

Circumference of a circle is 6.28. What is the area of the circle? - Circle - simple

Calculate the area of a circle in dm^{2}, if its circumference is 31.4 cm. - Squaring the Circle

Calculating side of the square with the same area as the circle of radius 18. - Perimeter to area

Calculate the area of a circle with the perimeter 15 meters. - Diameter to area

Find the area of a circle whose diameter is 26cm. - Circles

Area of circle inscribed in a square is 14. What is the area of a circle circumscribed around a square? - Circular flowerbed

Circular flowerbed with diameter 8 m we split by concentric circle to circle and annulus with the same area. Find the radius of the circle. - Area to perimeter

Calculate circle circumference if its area is 254.34cm2 - Calculate

Calculate the area of a circle whose radius is 5 dm. - Inscribed circle

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

How big is area of circle if its circumference is 80.6 cm? - Circular ring

Square with area 16 centimeters square are inscribed circle k1 and described circle k2. Calculate the area of circular ring, which circles k1, k2 form. - 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? - Two annuluses

The area of the annular circle formed by two circles with a common center is 100 cm^{2}. The radius of the outer circle is equal to twice the radius of the inner circle. Determine the outside circle radius in centimeters. - Equilateral triangle vs circle

Find the area of an equilateral triangle inscribed in a circle of radius r = 9 cm. What percentage of the circle area does it occupy? - Inscribed rectangle

The circle area is 216. Determine the area of inscribed rectangle with one side 5 long. - Circle and rectangle

A rectangle with sides of 11.7 cm and 175 mm is described by circle. What is its length? Calculate the content area of the circle described by this circle. - Circle inscribed

Calculate the perimeter and area of a circle inscribed in a triangle measuring 3 , 4 and 5 cm. - Circle in rhombus

In the rhombus is an inscribed circle. Contact points of touch divide the sides to parts of length 19 cm and 6 cm. Calculate the circle area.

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.

Examples of area of plane shapes. Circle Problems.