Answer:
3077.2
Step-by-step explanation:
A circle's mass is found by
Pie times R^2
7^2 is 49, times 3.14 is 153.86
then you Multiply 153.86 by 20 which gives you 3077.2
The combined time taken if Mario and Ben work together will be 1.875 days.
<u>Time taken</u>:
- Mario alone = 3 days
- Ben alone = 5 days
<u>Work rate</u> :
- Rate = 1 / time taken
- Mario's rate = 1 / 3
- Ben's rate = 1/5
<u>Their combined rate can be written thus</u> :
- Mario's rate + Ben's rate = combined rate
- 1/3 + 1/5 = 8/15
<u>Time taken if they work together</u> :
- Reciprocal of combined work rate
- Combined time taken = 1 ÷ 8/15 = 15/8 = 1.875 days
Therefore, the time taken of they work together is 1.875 days
Learn more :brainly.com/question/18112348
We know, surface area of cube = 6a²
So, side length of 1st cube = a² = 81/6
a = 3.67
Side length of 2nd cube = a² = 144/6
a = 4.90
Now, volume of cube = a³
Volume of 1st cube = 3.67³ = 49.43
Volume of 2nd cube = 4.90³ = 117.64
So, Ratio = 49.43 / 117.64 = 1/2.38
In short, Your Answer would be: 1: 2.38
Hope this helps!
Answer:
heheheheggfjdydvgeh hi jgeuhyuhf
Answer:D. trapezoid
Step-by-step explanation:
hope this helps!
