SOLUTION: I need some help on a few question preaping for a test 1. find the circumferenc of a circle whose diameter is 28mm 2. the total area of the outside surface of a cylinder 54cm

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Question 33264: I need some help on a few question preaping for a test
1. find the circumferenc of a circle whose diameter is 28mm
2. the total area of the outside surface of a cylinder 54cm in diameter & 75 cm in height.
3. the volume of a rectangle soild 6.9 m long 1.8 wide & 4.7 m high
4. volume of a cylinder with a diameter 70ft & a height of 46ft
5. the volume of a cone 14in in diameter & 10 in high
6. what is the volume of a sphere whose diameter is 84cm

I REALLY HOPE YOU CAN HELP ME
Answer by sarah_adam(201) About Me  (Show Source):
You can put this solution on YOUR website!
Below are the formulas that my help you with this problem . try substituting the values and find the answers for yourself
circumference of circle = 2*pi*r where r = radius of circle , pi = 3.14
also circumference of circle = d*pi where d = diameter of circle as d = 2*r
volume of cubeoid = x*y*Z where x,y,z are the lenghts of three sides
volume of cylinder = pi*r%5E2*h where r = radii and h = height
volume of cone : (b*h)/3 where b = base and h = height
volume of sphere : 4/3 *pi* r%5E3 where r = radii
surface area of cylinder : 2 *pi* r *h + 2 *p *r%5E2
hope the above formulas will help.. in case you have any problem post again