Hi! To find the surface area of a cylinder, you need to find the surface area of the base, and then the surface area of the rectangular prism that "wraps around" the cylinder.
The area of a circle: A=pi*r^2
A=3.14*3.7^2
A≈43.00
Multiply this by 2 because there are 2 circles
Combined Area of Circles = 86
Circumference of a circle = C=2pi*r (this is for the width of the rectangle)
C=2(3.14)(3.7)
C=23.236
C=W
W=23.236
W*L=A
23.236 * 7.1=A
A≈165
Now lets add them together!
86cm^2+165cm^2= 251 cm squared
Probability of a coin flip would be 50%
probability f a red card = 50%
50% x 50% = 25%
Y = e^tanx - 2
To find at which point it crosses x axis we state that y= 0
e^tanx - 2 = 0
e^tanx = 2
tanx = ln 2
tanx = 0.69314
x = 0.6061
to find slope at that point first we need to find first derivative of funtion y.
y' = (e^tanx)*1/cos^2(x)
now we express x = 0.6061 in y' and we get:
y' = k = 2,9599
Answer:
A) 39
Step-by-step explanation:
If you calculate the volume of the cube which is the V=a^3 you get 27, then calculating the pyramid, the Length is 3, and the Width is also 3. Then the height is 4. so you put that into the formula to calculate the volume which is V=L*W*H
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3
you get 12. Now its simple, you just add the 2 volumes, so you do 27+12 and its 39.