physics
posted by Anonymous .
an iron bar measures 11 cm x 7 cm x 5 cm it is melted down to make a cylinder height of 9 cm what is its radius

11 x 7 x 5 cm^3 = pi*R^2*9
Solve for R
R = sqrt[385/(9*pi)] cm
You do the numbers
Respond to this Question
Similar Questions

Physics
A solid cylinder of radius 0.85m is released from rest from a height of 1.8m and rolls down the incline as shown. What is the linear speed of the cylinder when it reaches the horizontal surface? 
physics
A solid cylinder of radius 0.85m is released from rest from a height of 1.8m and rolls down the incline as shown. What is the linear speed of the cylinder when it reaches the horizontal surface? 
Math
The diagram shows a solid metal cylinder. The cylinder has base radius 2x and height 9x. E cylinder is melted down and made into a sphere of radius r. Find the expression for r in terms of x. 
math
A paperweight containing liquid is made up of a cone and a cylinder. The radius of the cone is 3cm with height of 4cm. The diameter is 20cm and height is 8cm. 1. Calculate the total volume of the cone and cylinder when it si empty, … 
math
a cylindrical metal bar has a base radius of 2cm and a height of 9cm. it is melted down and recast into a tube. Find a side of the cube 
math
Inside a long empty cylinder with radius R = 25 cm is put a long solid cylinder with radius r = 10 cm such that the bases of the two cylinders are attached. Then water is poured in the remaining empty region of the first cylinder until … 
algebra
A package of modeling clay was shaped like a cone with a radius of 25 cm and a height of 7.2 cm. Miriam used all the clay to make a cylinder with a radius of 15 cm. What was the height of the cylinder? 
algebra
A package of modeling clay was shaped like a cone with a radius of 25 cm and a height of 7.2 cm. Miriam used all the clay to make a cylinder with a radius of 15 cm. What was the height of the cylinder? 
Maths
A metallic right circular cylinder is15cm high and the diameter of the base is 14cm it is melted and recasted into another cylinder with radius 4cm find its height and curved surface area 
calc
When the height of a cylinder is 12 cm and the radius is 4 cm, the circumference of the cylinder is increasing at a rate of pie/4 cm/m in, and the height of the cylinder is increasing four times faster than the radius. How fast is …