# Annulus

The radius of the larger circle is 8cm, the radius of smaller is 5cm. Calculate the contents of the annulus.

**Result****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:

- 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

Cable consists of 8 strands, each strand consists of 12 wires with diameter d = 0.5 mm. Calculate the cross-section of the cable. - Sidewalk

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? - Diameter to area

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

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. - Withdrawal

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? - Rounding

The following numbers round to the thousandth: - 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? - Negative in equation

2x + 3 + 7x = – 24, what is the value of x? - Disjoint

How many elements have union and intersection of two disjoint sets when the first have 1 and secodn 8 elements. - Passenger boat

Two-fifths of the passengers in the passenger boat were boys. 1/3 of them were girls and the rest were adult. If there were 60 passengers in the boat, how many more boys than adult were there?