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oksano4ka [1.4K]
3 years ago
15

A tunnel is 30 yards long and 15 yards wide. The height of the tunnel walls is 5 yards before the curve of the cylinder-shaped c

eiling. What is the volume of the tunnel? Use 3.14 for pi. Round your answer to the nearest hundredth. By the way i don't know how to attatch the image that is to this question . its a image of a mailbox

Mathematics
2 answers:
allochka39001 [22]3 years ago
6 0

Answer:

i just did this on ttm and the answer is 4,899.38 cubic yards


Step-by-step explanation:


Karolina [17]3 years ago
4 0
The tunnel is made of two shapes and we can find the volume of each.
Cuboid volume=15×5×30=2250 cu yds.
Half cylinder volume=π(7.5)²30/2=843.75π=2649.38 cu yds.
Total volume=4899.38 cu yds.
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Lian invested an amount of money at an interest rate of 5.2% per year.
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interest earned in one year if money invested by Lian is $x

= 5.2% of $x  (1)

But , it is given in one year  she received interest of 338 dollars

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equating $338 with  5.2% of $x  , we have

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=> x = 33800/5.2 = 6500.

Thus,  amount of money Lian invested is $6500.

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