Question

Sebuah bola golf massanya 100gram.jika jari jari golf 1,5cm.berapa massa jenis bola golf?
pakai cara

Answer 1

p = m/v 
v golf = 4pi r^3/(3) 
r = 1,5 = 3/2
m = 100 gr 
p = 100 /4pi (3/2)^3/3 
p = 100/2^2/3 pi x 3^3/2^3 
p = 100/3^2 pi /(2)
p = 100.(2)/9 pi
p = 200/9pi

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