Volume of a sphere = 4/3*pi*radius3
Volume = 4/3*pi*23 = 33.51032164 or about 33.5 cubic mm
80mm
2mm (d = r x 2)
The radius is half the diameter 15mm because the raduis is half the diameter so 30mm divided by 2mm it would be 15mm
13,600 millimeters3 or 13.6 meters3.
It is: 2*pi*2 = 4*pi or 12.566 mm to three decimal places
2mm by 4mm by 7mm
2mm 2mm
1mm cube has volume of 1mm3 and a surface area of 6*(1*1) = 6mm²2mm cube has a volume of 8mm3 and a surface area of 6(2*2)=24mm²Ratio for 1mm cube is 6-1 and ratio for 2mm cube is 3-1 ■
2mm 2mm
6mm is thicker than 2mm. It has a greater thickness of 4mm.
You didn't finish the question but I assume that you mean the surface area minus the area of the dimples. The surface area of a sphere is 4π*r^2 and since the diameter is 4.1 cm, the radius is half of that or 2.05 cm. Hence the surface area of a sphere of radius 2.05 = 4*π*(2.05)^2 =52.8101725 cm^2 ---------- Now for the dimples. They are circles taken out of the surface of the sphere and hence each has an area of π*r^2 and there are 150 of these. One cm is 10 mm (cm is hundredth, mm is thousandth) So the radius of the dimples is 0.2cm 150 * π * (0.2)^2 = 150 * π * (0.04) = 6πcm^2 = 18.8495556 cm^2 ---------- Now we subtract the area of the dimples from the area of the sphere: 52.8101725 cm^2 18.8495556 cm^2 ------------------------------- Subtract 33.9606165 cm^2 ANSWER: 33.9606165 cm^2 is the surface area of the golf ball minus the area of the dimples.
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