Answer:
<h2>
<u>-1 + √3 or -(1 - 2√3)</u></h2>
Step-by-step explanation:
(1 + √3) (2 - √3) = 2 - √3 + 2√3 - 3 = 2 - 3 - √3 + 2√3 = <u>-1 + √3 or -(1 - 2√3)</u>
<h2><u>Solution</u> :-</h2>
Given : Radius of cylinder = 8 m
Height = 4 m
Volume of cylinder = πr²h cu. units
= 22/7 × 8 × 8 × 4 m³
= 804.57 m³ (approx.)
Curved surface area = 2πrh sq. units
= 2 × 22/7 × 8 × 4 m²
= 201.14 m² (approx.)
Total surface area = 2πr(r + h) sq. units
= 2 × 22/7 × 8 (8 + 4) m²
= 2 × 22/7 × 8 × 12 m²
= 603.43 (approx.)
Finding the difference between the two temperatures, it is found that Regina is 38.7ºC degrees colder in January than in July.
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- The mid-afternoon temperature in January is of -12.6ºC.
- In July, it is of 26.1ºC.
- The difference of the temperatures is given by:

From the difference of 38.7ºC, there are two interpretations:
- Regina is 38.7ºC degrees colder in January than in July.
- Regina is 38.7ºC degrees warmer in July than in January.
A similar problem is given at brainly.com/question/22136310
Not sure but a guess that the answer is
C. 84 m^2