: What is the total estimation cost for mandrel, if density is 7.8 gm/cm² and material cost is Rs.240 kg?
Answers
Answered by
1
Answer:
Correct option is
B
50
ρ=
cm
3
8gm
ρ
1
=
5
3
(cm)
3
20gm
ρ
1
ρ
=
(
5
3
20
)
8
=
20
125×8
=50units
Answered by
1
Answer:
Given : mandrel, density is 7.8 gm/cm² and material cost is Rs.240 kg
To Find : total estimation cost for mandrel,
Solution:
Volume of cylinder = πR²H
Volume of Mandrel
= π(30)²120 + π(20)²(18 + 18)
= 10²π { 3²(120) + 2²(36)}
= 100π ( 1080 + 144 )
= 100π ( 1224 )
= 384336 mm³
= 384.336 cm³
density is 7.8 gm/cm³
density = mass / volume
=> mass = density * volume
=> mass = 384.336 * 7.8
=> mass = 2997.82 g
=> mass = 2.9978 kg
Rs.240 kg
Hence cost = 240 * 2.9978
= 719.5 Rs
Explanation:
thanks..
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