The radius of the larger circle is 8cm, the radius of smaller is 5cm. Calculate the contents of the annulus.
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
Calculate the area of two circles annulus k1 (S, 3 cm) and k2 (S, 5 cm).
- 22/7 circle
Calculate approximately area of a circle with radius 20 cm. When calculating π use 22/7.
- Circle - easy 2
The circle has a radius 6 cm. Calculate:
- Two circles
Two circles with a radius 4 cm and 3 cm have a center distance 0.5cm. How many common points have these circles?
- Bicycle wheel
After driving 157 m bicycle wheel rotates 100 times. What is the radius of the wheel in cm?
- The diagram
The diagram is a cone of radius 8cm and height 10cm. The diameter of the base is. ..
Cable consists of 8 strands, each strand consists of 12 wires with diameter d = 0.5 mm. Calculate the cross-section of the cable.
- Diameter to area
Find the area of a circle whose diameter is 26cm.
The city park is a circular bed of flowers with a diameter of 8 meters, around it the whole length is 1 meter wide sidewalk . What is the sidewalk area?
- Circle simple
Circumference of a circle is 6.28. What is the area of the circle?
- Circle - simple
The circumference of a circle is 930 mm. How long in mm is its diameter?
- Clock hands
The second hand has a length of 1.5 cm. How long does the endpoint of this hand travel in one day?
For the circle c1(S1; r1=146 cm) and c2(S2; r2 = 144 cm) is distance of centers |S1S2| = 295 cm. Determine the distance between the circles.
Plot has a diamond shape, its side is 25.6 m long and the distance of the opposite sides is 22.2 meters. Calculate its acreage.
- Dropped sheets
Three consecutive sheets dropped from the book. The sum of the numbers on the pages of the dropped sheets is 273. What number has the last page of the dropped sheets?
- Round it
0.728 round to units, tenths, hundredths.
If I withdrew 2/5 of my total savings and spent 7/10 of that amount. What fraction do I have in left in my savings?