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In order to find the surface area we must first find the radius of the sphere:-
Volume of the sphere = 4/3*pi*radius3 = 113.1 cubic inches
Multiply both sides by 3:
4*pi*radius3 = 339.3
Divide both sides by 4*pi:
radius3 = 27.0006361
Cube root both sides:
radius = 3.000033559
Surface area of the sphere = 4*pi*3.0000235592 = 113.0991118 square inches
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Is 1131 prime?
1131 is composite.
What is the surface area of a cylinder with diameter 20 feet and height 8 feet?
Total surface area of a cylinder = (2*p*radius2)+(pi*diameter*height)Total surface area = 1130.973355 or 1131 square feet to the nearest square foot.
What is 1.655 as a fraction?
1131/200
Is 1131 a composite?
Yes, it is a multiple of 3.
A student weighs 1131 pennies and finds them to have a mass of 3001.8 g If the pre-1982 pennies weigh on average 3.09 g and the post-1982 pennies weigh 2.51 g how many of the pennies are post-1982?
Of 1131 pennies, x weigh 3.09 g and y weigh 2.51 g. In total, the 1131 pennies weigh 3001.8 g. 3.09x + 2.51y 1131 = 3001.8 I have no idea what to do after that, or if it's even right. I was thinking maybe dividing, but the number was so small it had to be wrong. Tell me, what grade is this for?
