Using 3.14 as Pi the area of circle is: 379.94
380.13 square cm
5.5 cm
Circumference of circle: 2*pi*3.5 = 22cm rounded to the nearest whole number
616 cubed centimeters.
A cone with a slant height of 22cm and radius of 7cm has a total surface area of about 637.74cm2
Surface area = 4*pi*112 = 1520.531 cm2 rounded to 3 d.p.
A cone with a slant height of 22cm and radius of 7cm has a total surface area of about 637.74cm2
You can work out the area of a circle by squaring the radius (multiplying the radius by itself) and multiplying this by pi. In this case the radius is 22cm so multiply 22 by 22. This equals 484. Multiply 484 by pi (3.14). This makes the answer 1520.53 cm2. Make sure that this is the radius and not the diameter. The radius is only from the centre of the pizza to one side, not all the way across, because that sounds like a massive pizza.
In order to calculate the volume of your fish tank, you need to measure the height, width, and length of the aquarium before anyone can answer this question.
Basically, the perimeter of a shape is the total legnth of all it's sides, therefore to write an expression for it, you need to get the legnths of the sides (even if there is a letter (eg: n)), then put them into an expression. For instance: A polygon has 2 sides that are 15cm long, 1 side that is 22cm long, 4 sides that are n long and 3 sides that are a long. To write the expression for the perimeter of this polygon as basically as possible, you would write: 15cm + 15cm + 22cm + n + n + n + n + a + a + a Now you need to simplify it: 52cm + 4n + 3a If you were asked this question, you would write 52cm + 4n + 3a as your answer. That is an expression for the perimeter of that particular polygon. If you apply the same theory to any question like the one you asked about, you would get it right.
22cm
About 1520.5 cm2.