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waheguru
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henkjan
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surface area of a sphere:
A = 4*pi*r^2

waheguru
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so how much money???

waheguru
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im getting 541 dollars

henkjan
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use r = 0.124
Find A with this r
for the price use: A*28

waheguru
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so what are u getting for the price

henkjan
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You have over 20 square meter of surface on a basketball?!

waheguru
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cant i use 12.4 as the radius and then divide by 100 to get the meters

henkjan
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A = 4*pi*0.124^2
Price = A*28
Use your calculator

henkjan
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no, you have to divide by 100*100 as you are now talking about surface (=cm*cm or m*m)

waheguru
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why

henkjan
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Let's say you have 1 meter by 1 meter of paper..... 1 square meter.... this square meter holds 100 times 100 square centimeter pixels...

waheguru
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oh thankyou