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Umnica [9.8K]
3 years ago
15

Not sure if i chose the right one?

Mathematics
1 answer:
ser-zykov [4K]3 years ago
8 0

Answer:

113.04 ft³ is correct

Step-by-step explanation:

The volume (V) of a cone is calculated as

V = \frac{1}{3}πr²h ( r is the radius and h the height )

There are 2 cones to be summed one with h = 7 , the other with h = 5

Thus

V = \frac{1}{3} π × 3² × 7 + \frac{1}{3}π × 3² × 5

   = \frac{1}{3} × 3.14 × 9 (7 + 5)

   = 3.14 × 3 × 12

   = 113.04 ft²

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ziro4ka [17]

Answer:

1a) t = 0.17b

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2) 51,167.50

Step-by-step explanation:

1a) 17% converted to a decimal (divide by 100) = 0.17. Multiply that by the amount of the bill (before tipping) to get the amount of the tip

1b) The bill of $248 represents the entire bill (100%) plus the tip amount (17%) which makes 117%. As a decimal, this is 1.17.

To find what the cost was without the tip, divide the bill total by 1.17

248/1.17 = 211.97. That was the bill before the tip was added.

248-211.97 = 36.03 was the tip added.

2) 5.5% converted to a decimal is 0.055

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3 years ago
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. Curt is installing a picket fence around his garden which is 45.45 ft by 14.63 ft. When he gets to the hardware store he finds
Dmitriy789 [7]
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To cover each of 45.45 ft long side, he will need 45.45 /  2 = 22.7 slats which approximates to 23. So, they are 2 * 23 = 46 slats.

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