Answer:
[tex]3927\:cm^2[/tex]
Step-by-step explanation:
Radius of the proposed wrapper= 5 cm
Slant Height of the proposed wrapper= 10 cm
To find out how many square cm of wrapper paper will they need, we need to calculate the combined curved surface area of the wrapper.
Curved Surface Area of a Cone[tex]=\pi rl[/tex]
Total Surface Area of one cone shaped wrapper
[tex]=10*5\pi\\=50\pi \:cm^2[/tex]
Therefore:
Curve Surface Area of 25 cone shaped wrapper
[tex]=25*50\pi \\=3926.99\approx3927.0\:cm^2[/tex]
They will need 3927 square cm of wrapper paper.
