√(- 9 ) / (( 4 - 7 i ) - ( 6 - 6 i )) = 3 i / ( 4 - 7 i - 6 + 6 i ) =
= 3 i / ( - 2 - i ) = - 3 i / ( 2 + i ) =
=
- 1 - 2 i
Answer:
The correct option is;
C. 52.2 × 4.4 × 2 + 47.8 × 4.4 × 2
Step-by-step explanation:
The area of the square frame is the area of the inner square subtracted from the area of the outer square
Which gives;
52.2² - 47.8² = 440
Therefore;
Option A. 52.2² - 47.8² is a correct way of finding the area of the square frame
Option B. 2 × ((52.2×2.2) + (47.8×2.2)) = 440, is a correct way of finding the area of the square frame
Option C. 52.2 × 4.4 × 2 + 47.8 × 4.4 × 2 = 880, is not a correct way of finding the area of the square frame
The error is the thickness is 2.2 not 4.4
Option D. 100×(52.2 - 47.8) = (52.2 + 47.8) × (52.2 - 47.8) = 52.2² - 47.8² = 440, is a correct way of finding the area of the square frame
Answer:
You can't solve number 2 without solving number 1 first. Subtract 19.99 from the total amount left (answer to number 2)
Step-by-step explanation:
The volume of ball is 113.04 cubic centimeter
<em><u>Solution:</u></em>
Given that we have to find the volume of tennis ball
Since the ball is of sphere shape, we can use the sphere formula
<em><u>The volume of sphere is given by formula:</u></em>
Where, "V" is the volume and "r" is the radius
Given that,
Diameter = 6 cm
Therefore,
<em><u>Substituting in formula, we get</u></em>
Thus volume of ball is 113.04 cubic centimeter
