Ask question

Ask question

All categories

2 years ago

12

A steel pipe 50 cm long has an outside diameter of 2 cm and an inside diameter of 1.8 cm. If the density of the steel is 7.8 gra

ms per cm3, what is
the mass of the pipe to the nearest gram?

1 answer:

never [62]2 years ago

4 0

Answer:

the volume is 50x1.8x2

v=180cm³

therefore, density is mass/volume

Step-by-step explanation:

mass =density x volume

mass= 7.8 x 180cm³

mass= 1,404grams

You might be interested in

A ferris wheel goes around once every 20 seconds . How many times will a rider be ag thetop during an 8-minuteride?

allsm [11]

Answer:

The answer is B.

Step-by-step explanation:

There are three 20 second time periods in 1 minute. Three times eight is equal to 24.

8 0

2 years ago

Which point is the reflection of (2,-5) on the

Ivahew [28]

A reflection in the y-axis will reverse the x values but not change the y value
The answer is D. (-2,-5)

7 0

2 years ago

What is 9/16 x 2/3 (show ur work) thanks

Ilya [14]

Answer:

$\displaystyle{ \frac{9}{16} \times \frac{2}{3} }$

$\displaystyle{ \frac{9 \times 2}{16 \times 3} }$

$\displaystyle{ \frac{18}{48} }$

$\displaystyle{ \frac{ \cancel2 \times \cancel3 \times 3}{2 \times \cancel2 \times 2 \times 2 \times \cancel3} }$

$\displaystyle{ \frac{3}{2 \times 2 \times 2} }$

$\displaystyle{ \frac{3}{8} }$

6 0

2 years ago

What is the scientific notation of 42

Aleksandr-060686 [28]

The answer is 7, because you multiply it by 6.

7 0

2 years ago

Read 2 more answers

a strip of paper is 9/10 of an inch long. you need to cut the paper into 3/12 inch pieces. how many pieces will you be able to c

e-lub [12.9K]

We have to divide 9/10 by 3/12.

if we divide by a fraction, we can instead multiply by it's inverse:

$\frac{9}{12}/ \frac{3}{12} = \frac{9}{12} * \frac{12}{3}$

so now we count:

$\frac{9}{12} * \frac{12}{3} =\frac{9}{1} * \frac{1}{3}=3$

so we can cut exactly 3 pieces!

5 0

2 years ago