A. 1 and 8 B. 4 and 6 C. 5 and 6 D. 1 and 7 Please tell me why
1 answer:
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Answer:
0.84
Step-by-step explanation:
The sine function is a trigonometric function.
We want to evaluate
The sine function can be found on most scientific calculators.
Make sure your calculator is in degree and enter sin 57
It will give you 0.83867
If you correct to the nearest hundredth, you get:
0.84
The total weight of the water in a full tank, to the nearest pound is 1056 pounds, if water filled with water in the 4 diameter hemispherical tank and weighs 62.4 pounds per cubic foot.
Step-by-step explanation:
The given is,
A hemispherical tank is filled with water and has a diameter of 4 feet.
Water weighs 62.4 pounds per cubic foot
Step:1
Formula to weight of water is,
= Volume of water tank × weight of water per foot......(1)
Step:2
Formula to find volume of the tank is,
...................................(2)
From given, r = Radius of Hemisphere
r = 2 foot
From equation (2),
= ×
×
= 16.755 cubic foot
Step:3
From equation (1),
= 16.775 × 62.4 (∵ Water weighs 62.4 pounds per cubic foot )
= 1045.52 pounds ( ∵ ×
=
)
≅ 1046 pounds
Weight of water in tank = 1046 pounds
Result:
The total weight of the water in a full tank, to the nearest pound is 1056 pounds, if a hemispherical tank is filled with water and it has 4 feet diameter and water weighs 62.4 pounds per cubic foot.