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3 years ago

What’s the area of a circle with 7.4 meters

Mathematics

1 answer:

Dmitry [639]3 years ago

5 0

Answer:

172.0336 Meters

Step-by-step explanation:

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A cubic inch of PVC material weight 0.063 pounds per cubic inch. What’s the weight of a 36 inch piece of PVC pipe with an outsid

artcher [175]

Answer:

Option B. 0.783 pounds

Step-by-step explanation:

step 1

Find the area of a a 36 inch piece of PVC pipe with an outside diameter of 0.82 inches and an inside diameter of 0.75 inches

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r2=0.82\ in$

$r1=0.75\ in$

assume

$\pi =3.14$

$A=\pi (r2^2-r1^2)$

substitute the values

$A=(3.14)(0.82^2-0.75^2)$

$A=0.345086\ in^2$

step 2

Find the volume of the piece of PVC

Multiply the area by its length

$V=0.345086(36)=12.42\ in^3$

step 3

Find the weight of the piece of PVC

Multiply the volume by its density

The density is $0.063\frac{lb}{in^3}$

$W=12.42(0.063)=0.783\ lb$

4 0

3 years ago

What is the difference between 0.02 and -0.02

Degger [83]

Answer:

0.04

Step-by-step explanation:

Using absolute value |.02|+|.-02|= .04

5 0

3 years ago

Your friend asks you to help him study and will pay you 5 dimes the first time you help him. You agree to help if he multiplies

zvonat [6]

You would have 78,125 dimes after the 7th study session.

Which would equal out to $7,812.50

6 0

3 years ago

Read 2 more answers

What is the ninth term of the arithmetic sequence defined by the rule A(n)= -14+(n-1)(2)

Kruka [31]

If you start counting from 0, you ninth term will be 8. Replace n=8 and calculate:
A(8) = -14 + (8-1)(2) = -14 + (7)(2) = -14 + 14 = 0

If you start counting from 1, your ninth term will be 9. Replace n=9 and calculate:
A(9) = -14 + (9-1)(2) = -14 + (8)(2) = -14 + 16 = 2

3 0

3 years ago

Three students opened saving accounts. Mariama has saved $25.40. Shai saved 3/4 of the amount that Mariama saved. Nyah saved twi

Ne4ueva [31]

The amount of money Shai saved:

$25.4 \times \frac{3}{4} = 19.05$