LPB = 154
4 x 22/7 x r2= 154
R2= 154 x 7 /88
R2 = 12.25
R= akar 12.25
R = 3.5 cm
Volume = 4/3 x 22/7 x 3.5 x 3.5x 3.5
V = 179, 666
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154 cm² = 4 x22/7xr²
154cm² = 88/7 x r²
r² = 154 x 7 / 88 = 1078 / 88 = 12,25
r = √12,25 = 3,5
v bola = 4/3 x πr³
4/3 x 22/7 x 3,5 x 3,5 x 3,5 = 88/21 x 42,875 = 3773/21 = 179,67 cm³
jgn lupa bintangnya yahh
LPB = 154
4 x 22/7 x r2= 154
R2= 154 x 7 /88
R2 = 12.25
R= akar 12.25
R = 3.5 cm
Volume = 4/3 x 22/7 x 3.5 x 3.5x 3.5
V = 179, 666