Given:
- Height of cylinder is 18.2 cm
- Radius of cylinder is 3 cm

To Find?

Solution:
Using formula:
- Surface area of cylinder = 2πr (h + r)

Substituting values in the formula:





- Hence, (B) 399.4 cm² is right answer.
The answer would be A because 3.90 x 3.5 is equal to 13.65
Answer: 2.7mm
Step-by-step explanation:
The formula for the circumference of a circle is given as 2πr. In thkw case, thw circumference is 17mm.
Therefore, 2πr = 17
2 × 3.14 × r = 17
6.28r = 17
r = 17/6.28
r = 2.7mm
Therefore the radius of the circle is 2.7mm
We know that
the law of cosines formulas established
c²=a²+b²-2*a*b*cos C-----> cos C=[a²+b²-c²]/[2*a*b]
a=11 m
b=12 m
c=16 m
so
cos C=[11²+12²-16²]/[2*11*12]---> cos C=0.0341
C=arc cos (0.0341)-------> C=88.05°
see the attached figure
the answer isthe angle is 88°
Answer:
x = 63°
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
<u>Geometry</u>
- All angles in a triangle add up to 180°
Step-by-step explanation:
<u>Step 1: Set up equation</u>
x + 94° + 23° = 180°
<u>Step 2: Solve for </u><em><u>x</u></em>
- Combine like terms: x + 117° = 180°
- Subtract 117° on both sides: x = 63°