The surface area of a cylindrical can is equal to the sum of the area of two circles and the body of the cylinder: 2πr2 + 2πrh. volume is equal to π<span>r2h.
V = </span>π<span>r2h = 128 pi
r2h = 128
h = 128/r2
A = </span><span>2πr2 + 2πrh
</span>A = 2πr2 + 2πr*(<span>128/r2)
</span>A = 2πr2 + 256 <span>π / r
</span><span>
the optimum dimensions is determined by taking the first derivative and equating to zero.
dA = 4 </span>πr - 256 <span>π /r2 = 0
r = 4 cm
h = 8 cm
</span><span>
</span>
Answer:
A:61°
B:72°
C:47°
Explanation:
I took the test and it was correct
Answer: x=2.9, y=-1.6 and x=-1.7, y=6.7
PLEASE MARK ME AS BRAINLIEST
Hello :)
The equation to volume of a rectangular prism is:
V=lwh
So, let's plug in the values and solve:
V=5×9.6×7
Answer: 336
Hope this helps and have a great day :D
Step-by-step explanation:
we know about vertical angels that are equal
so <2=<4
(in fact they are congruent angles)
we found those only from the definition of vertical angles.