#### 502,654.82
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- A cylindrical tank with a radius of 4 meters and a height of 10 meters is filled with water. If 1 cubic meter of water weighs 1000 kg, what is the total weight of the water in the tank?
- The volume of the cylinder is \( \pi r^2 h = \pi \times 4^2 \times 10 = 160\pi \) cubic meters.
- The total weight is \( 160\pi \times 1000 \approx 502,654.82 \) kg.
- A store offers a 20% discount on a jacket originally priced at $150. If sales tax is 8%, what is the final price after discount and tax?
- The discount is \( 0.20 \times 150 = 30 \) dollars.
- The discounted price is \( 150 - 30 = 120 \) dollars.
