You need the length of the rod to compute the weight.
To do so, you can calculate the volume of the rod, which would be length*Pi*22 multiplied by the density of MS, which is 7.86 g/cm3, or simply 15.72(Pi)*length of the rod
Mildsteel rod 40mm dia. = 9.85 kg per metre. I think that is what you asked.
Officially, 40mm in diameter. Originally, table tennis balls were officially 38mm in diameter. It wasn't until October 1st, 2000 that the ITTF changed the official ball size from 38mm to 40mm. The reason for the change was to make the game more appealing to spectators by slowing down the ball. There are some recreational ball sizes that are played with for fun such as the 46mm ball (huge!).
40mm is 4cm. There are 100cm in a meter.
There are 4 centimeters in 40mm - 10mm per centimeter.
divide by 1,000 40/1,000 = 0.04 40mm = 0.04 metres
The diameter of any sphere can be calculated by multiplying it's diameter by Pi. For a 40mm diameter Ping Pong Ball, this comes to ~ 125.6 mm. For a 38mm diameter Ping Pong Ball, this comes to ~ 119.32 mm. The diameter of a ping pong ball is 40mm. I do not know the circumference. Before the ball was changed a few years ago to 40mm, it was 38mm. The larger ball travels more slowly and with less spin. This was done to make Table Tennis easier to watch on television, and therefore make the sport more popular. On TV, TT can appear too fast to appreciate, and by enlarging the ball it was hoped that the game would slow. The game has, in fact, slowed, but this has not accomplished the goal of popularizing the sport. Many players would love to see the ball returned to 38mm, as at this size the ball traveled more quickly and more spin was possible, making the ball's travel more manageable.
The diameter of a ping pong ball is about 1.57 inches (which is 40mm). It's small, but it packs a punch in a game!
The weight of a 40mm diameter mild steel (MS) pipe would depend on its length and wall thickness. A general estimate for a 40mm MS pipe with a wall thickness of 3mm would be around 3.27 kilograms per meter.
=3.14 * (Diameter of pipe in Mtr. - wall thickness in Mtr. ) * Wall Thickness in Mtr. * 7850
The diameter of a standard tealight candle is typically around 1.5 inches or 38 millimeters.
The weight of 40mm rebar per meter is approximately 9.87 kilograms (21.76 pounds).
The inside diameter = 40 - 2 x 1.6 = 40 - 3.2 = 36.8 mm
40 mm is 40 mm, a little over 1 1/2".
The official rules of table tennis state that the ball must be spherical, with a diameter of 40mm.
Officially, 40mm in diameter. Originally, table tennis balls were officially 38mm in diameter. It wasn't until October 1st, 2000 that the ITTF changed the official ball size from 38mm to 40mm. The reason for the change was to make the game more appealing to spectators by slowing down the ball. There are some recreational ball sizes that are played with for fun such as the 46mm ball (huge!).
It means that it has variable magnifcation, from 3 to 9 times larger, and has a front lens that is 40mm in diameter.
A standard ping pong ball has a diameter of about 4 cm.
4cm