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GarryVolchara [31]
3 years ago
5

I need to know the surface area of these

Mathematics
1 answer:
anastassius [24]3 years ago
6 0

9514 1404 393

Answer:

  245 cm²

Step-by-step explanation:

The surface area of a cone is given by ...

  SA = πr(r +s) . . . . where r is the radius, and s is the slant height

Filling in the given values, we have ...

  SA = (3.14)(3 cm)(3 cm +23 cm) = (3.14)(3)(26) cm² ≈ 245 cm²

The surface area of the cone is about 245 cm².

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Leonard earns $8.75 per hour working at a bowling alley. Last weekend, he worked for 5.4 hours. How much money did Leonard earn
sertanlavr [38]

Answer:

$47.25

Step-by-step explanation:

Earnings = (rate of pay)(number of hours worked)

Here,

Earnings last weekend = ($8.75/hr)(5.4 hrs) = $47.25

4 0
3 years ago
What is the slope of the line 8y=-16 ? 0 12 16 undefined
Anarel [89]
Undefined, as no x-value is given
6 0
3 years ago
Read 2 more answers
Please Help!!
leva [86]

Answer:

0.0069

Step-by-step explanation:

This is a power series problem.

The taylor power series expansion for sin(x) = x - x³/3! + (x^(5))/5! - (x^(7))/7! + (x^(9))/9! .......

Our question says we should use the first 5 terms to find the value of sin(π). Thus;

sin(π) = π - π³/3! + (π^(5))/5! - (π^(7))/7! + (π^(9))/9!

This gives;

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5 0
3 years ago
Prove the identity <br> sin(x-y)/cosxsiny=tanxcoty-1
photoshop1234 [79]

Step-by-step explanation:

\frac{sin(x - y)}{cos \: x \: sin \: y}  \\  \\  =  \frac{sin \: x \: cos \: y -cos \: x \: sin \: y }{cos \: x \: sin \: y}  \\  \\  =    \frac{sin \: x \: cos \: y }{cos \: x \: sin \: y}   +   \frac{-cos \: x \: sin \: y }{cos \: x \: sin \: y}  \\  \\ =    \frac{sin \: x \:}{cos \: x }  \times  \frac{cos \: y }{sin \: y}   -    1 \\  \\  = tan \: x \: cot \: y - 1 \\  \\  \therefore \:  \frac{sin(x - y)}{cos \: x \: sin \: y} = tan \: x \: cot \: y - 1  \\  \\ thus \: proved \\

6 0
4 years ago
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sveticcg [70]

Answer:

D- 3 hours long they were traveling

Step-by-step explanation:

27÷ 9= 3

36÷ 12= 3

7 0
3 years ago
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