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= - 5
m₂ = 1/5
Persamaan garis:
y - 0 = (1/5)(x - 0)
5y = x
x - 5y = 0
s2 = r2 + t2
= 5 kuadrat + 12 kuadrat
s2= 25 + 144
= 169
s=√169
s= 13
A. L.selimut = phi x r x s
= 3,14 x 5 x 13
= 204,1
B. L.permukaan = phi x r ( r + s )
= 3,14 x 5 (5+13)
= 15,7 x(18)
= 282,6
C. V= 1/3 x phi x r2 x t
= 1/3 x 3,14 x 5 x5 x15
= 1177,5 : 3
= 392,5