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TEA [102]
3 years ago
15

The boys kept adding sand, and ten minutes later the volume of the sand cone had increased by 30%. What is the exact volume of t

he sand cone now? (Show your work. Remember you can draw a picture to help you solve the problem.)
Mathematics
1 answer:
RideAnS [48]3 years ago
5 0

Answer:

a) 84π b) 109.2π

Step-by-step explanation:

The formula to find this is v=πr^2h/3

r=d/2. so the radius (r) is 6 because you have to divide the diameter (12) by 2. and the height is 7. so, 6^2=36 and 36x7=252.

252/3=84

and because the question is asking for the EXACT value, you need to just put the pi symbol next to it. Final answer for a is 84π

B) you need to find 30% of 84, which is 25.2 and add it to 84, and you will get 109.2! Final answer is 109.2π.

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What is the percentage equivalent of 1.48?Select one of the options below as your answer: A. 148% B. 1.48% C. 1480% D. 14.8%
Nat2105 [25]
To find a percent from a decimal, you multiply the decimal by 100. So, the answer would be A.
3 0
2 years ago
Use the given endpoint R and the midpoint M of segment RS to find the coordinates of the other endpoint S. (Hint: Use the midpoi
zimovet [89]

Using the given endpoint R  (8,0)and the midpoint M (4,-5) , the other endpoint S is (0,-10)

Explanation :

Use the given endpoint R and the midpoint M of segment RS

R (8, 0 ) and M (4, -5 )

Let 'S' be (x2,y2)

Apply the midpoint formula

(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )\\

Endpoint R is (x1,y1) that is (8,0)

Substitute the values and make it equal to M(4,-5)

(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2} )\\\\(\frac{8+x_2}{2},\frac{0+y_2}{2} )=(4,-5)\\\\\frac{8+x_2}{2}=4\\8+x_2=8\\x_2=8-8=0\\x_2=0\\\\\\\frac{0+y_2}{2} =-5\\y_2=-10

So other endpoint S is (0,-10)

Learn more : brainly.com/question/16829448

8 0
3 years ago
Find the measure of angle x.<br> Х<br> 75°<br> 36<br> x = 180<br> X = 111<br> x= 69<br> X = 75
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4 0
3 years ago
Carpeting costs $9.99 a yard. Jan wants to buy 17.4 yards. How much will it cost her?
dusya [7]

Answer:

173.83

Step-by-step explanation:

17.4 * 9.99

173.826 ~ 173.83

4 0
3 years ago
Read 2 more answers
I need help pls someone
Solnce55 [7]

In this question they've given us the formula and they just want us to plug in the numbers and get the value.


P is the original value, P=$600


r is the depreciation rate, r=10%=0.1


t is the time in years, t=2


A = P(1-r)^t = 600(1 - 0.1)^2 = 600 \cdot .9^2 = 486


Answer: $486






7 0
3 years ago
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