<h3>The surface area of a piece of paper is
</h3>
<em><u>Solution:</u></em>
surface area of a piece of paper = 137 sq cm
<em><u>Use the fact that 10 mm = 1 cm to convert this area to mm^2</u></em>
Then,
<em><u>Convert 137 sq cm to sq mm</u></em>
Thus, surface area of a piece of paper is
Answer:
x to the 12th power, y to the 3rd power and z to the 11th power
Step-by-step explanation:
Answer:
Radius=2.09 cm
Height,h=14.57 cm
Step-by-step explanation:
We are given that
Volume of cylinderical shaped can=200 cubic cm.
Cost of sides of can=0.02 cents per square cm
Cost of top and bottom of the can =0.07 cents per square cm
Curved surface area of cylinder=
Area of circular base=Area of circular top=
Total cost,C(r)=
Volume of cylinder,
Substitute the value of h
Differentiate w.r.t r
Again, differentiate w.r.t r
Substitute the value of r
Therefore,the product cost is minimum at r=2.09
h=
Radius of can,r=2.09 cm
Height of cone,h=14.57 cm
Since all the sides have the same length, it means that a×a×a will equal 384 cubic cm, where a has the same value.
We need to find the number that cubed, will give us 384.
Thinking of the closest number that would give us something close to 384, it's 7 cubed, which is 343. Therefore, it must be something over 7, I'm estimating 7 point something.
Answer:
n = 28.8
Step-by-step explanation:
n × 7.5 = 18 × 12
7.5n = 216
7.5n ÷ 7.5 = 216 ÷ 7.5
n = 28.8