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tekilochka [14]
3 years ago
13

Area of the circle ??

Mathematics
1 answer:
Yuri [45]3 years ago
3 0

Answer:

It's 28.26

Step-by-step explanation:

Multiply 3.14 x 3 x 3 then you'll get the answer.

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The length of a rectangle is twice its width. The perimeter is 60 ft. Find its area.In the form of a paragraph, explain in compl
Vika [28.1K]

Set the following: Length = L    Width = W

The length is twice the width:    L = 2*W     or:  W = L/2

Perimeter: P = 60ft = 2*L + 2*W

Substituting L for W in the perimeter equation gives:

P = 60ft = 2*L + 2*(L/2) = 2*L + L = 3L

L = 60ft/3 = 20ft    W=L/2=20ft/2=10ft

Verify result:  Perimeter= P = 60ft = 2L + 2W = 2*20ft +2*10ft = 40ft+20ft = 60ft

The area of the rectangular is: Area = A = Length*Width = L*W = 20ft*10ft = 200 (ft)^2

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7 0
3 years ago
Please help i need to turn this in in 20 minutes
steposvetlana [31]

Answer:

Im solving it.

Step-by-step explanation:

4 0
3 years ago
Rachel has $80 in a savings account.The interest rate is 10%per year and is not compounded. How much interest will she earn in 1
erma4kov [3.2K]

Answer:

I = $ 8.00

Equation:

I = Prt

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 10%/100 = 0.1 per year,

then, solving our equation

I = 80 × 0.1 × 1 = 8

I = $ 8.00

The simple interest accumulated

on a principal of $ 80.00

at a rate of 10% per year

for 1 years is $ 8.00.

5 0
3 years ago
Set up the integral that would give the volume v generated by rotating the region bounded by the given curves about the y-axis.
lorasvet [3.4K]
Consider, pls, this solution.
Note, that V1 marked with orange lines (see the graph), V2 - with green colour.

6 0
3 years ago
( −2 x^3) ^ 3 simplify
densk [106]

Answer:

-8x^9

Step-by-step explanation:

We can split up the exponent into multiple products: (-2x^3)^3=(-2)^3*(x^3)^3.

We know that (-2)^3=(-2)*(-2)*(-2)=-1*-1*-1*2*2*2=-1*8=-8.

We also know that (x^3)^3=x^{3*3}=x^9.

So, our answer is \boxed{-8x^9} and we're done!

5 0
3 years ago
Read 2 more answers
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