Ava45018
Ava45018
05-05-2018
Mathematics
contestada
HELPPPPP why is the answer D?
Respuesta :
budwilkins
budwilkins
05-05-2018
r(A) = 20%r(B) + rB = 1.2r(B)
h1 = height of A
h2 = height of B
V(A) = V(B)
pi×(r(A)^2)h1 = pi×(r(B)^2)h2
(1.2r(B))^2 h1 = (r(B)^2)h2
1.44r^2 h1 = r^2 h2
get rid of the r^2 in both sides
h2 = 1.44h1 = 1h1 + 0.44h1
h2 = h1 + 44%h1
Therefore D) h2 is 44% longer than h1
D) is the correct answer !
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