Squaring the Circle

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

Result

x =  31.9

Solution: Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! Next similar examples:

1. Percentage of waste In a square plate with side 75 cm we cut 4 same circles. Calculate the percentage of waste.
2. Quatrefoil Calculate area of the quatrefoil which is inscribed in a square with side 6 cm.
3. Cutting circles From the square 1 m side we have to cut the circles with a radius of 10 cm. How many discs we cut and how many percent will be waste?
4. Pipeline How much percent has changed (reduced) area of pipe cross-section, if circular shape changed to square with same perimeter?
5. CD disc A compact disc has a diameter of 11.8 cm. What is the surface area of the disc in square centimeters?
6. Circular lawn Around a circular lawn area is 2 m wide sidewalk. The outer edge of the sidewalk is curb whose width is 2 m. Curbstone and the inner side of the sidewalk together form a concentric circles. Calculate the area of the circular lawn and the result round to 1
7. Cable Cable consists of 8 strands, each strand consists of 12 wires with diameter d = 0.5 mm. Calculate the cross-section of the cable.
8. Annulus Two concentric circles form an annulus of width 10 cm. The radius of the smaller circle is 20 cm. Calculate the content area of annulus.
9. Ace The length of segment AB is 24 cm and the point M and N divided it into thirds. Calculate the circumference and area of this shape.
10. Circle - simple Calculate the area of a circle in dm2, if its circumference is 31.4 cm. Determine the radius of the circle, if its perimeter and area is the same number. Outer perimeter of silo is 32 m. Concrete wall is 35 cm thick. What is diameter and area of inside floor of silo? It is given square DBLK with side |BL|=13. Calculate area of triangle DKU if vertex U lie on line LB. How many square tiles with the content 121 cm2 has to be ordered for the paving of the square room with a side length of 2.75 meters? On the plan with a scale of 1:1500 is drawn as a square garden with area 81 cm2. How many meters is long garden fence? Determine the actual acreage gardens. ABCD is a square. The square is folded on the midpoint of AB and A is folded onto the fold, creating a shaded region. The perimiter of the shaded figure is 75. Find the area of square ABCD We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?