what is the approximate surface area of this pencil ? ( use 3.14 for pi round your awnser to the nearest whole number. )

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anonymous · Answer

attachment

anonymous · Answer

Can someone please tell me the steps of what to do?

anonymous · Answer

First break up the object into shapes you know how to find the area of.

anonymous · Answer

Then sum the areas (be careful of how the shapes fit together)

anonymous · Answer

That's a little confusing. Can you please show me the steps using the formula's ?

anonymous · Answer

Ok so you have a pencil: body is like a cylinder and the tip is like a cone.
The area around a cylinder is $$\pi*d*l$$ where d is diameter and l is length.
the area around the slanted part of the cone is $$\pi*r*s$$
The area of the circle at the eraser end is $$\pi*r ^{2}$$
Now solve each and sum the results:
Cylinder=pi*d*l=3.14*0.6*15=28.26
Cone=pi*r*s=3.14*0.3*2=1.884
Circle=pi*r^2=0.2826
Add these all together and you get about 30.4 cm^2.

anonymous · Answer

thank you.  (:

anonymous · Answer

Welcome :)