The formula for the surface area of a cylinder is:
2<span>π</span><span>r</span><span>h </span><span>+ </span><span>2</span><span>π</span><span>r^</span><span>2
If we substitute in the measurements that we know, you get:
2</span><span>
(3.5) (14) + 2</span><span>
(3.5)^2
If we simplify this expression, we get:
98</span><span>
+ 24.5</span><span>
If you simplify once more, you get
122.5</span><span>
or </span><span>≈ 384.85
Therefore, the surface area is 122.5</span>
or about 384.85<span>
</span>
7 = 10% of y
7 = (10/100)*y
7 = 0.1y
0.1y = 7
y = 7/0.1
y = 70
Simplify using FOIL 15x3+18x+10x2+12
Answer:
h= -7
hope this helps!!:)
Step-by-step explanation: