mathematic
posted by patience daniel .
q1 a cone has a base radius of 5cm and height of 12cm(a)calculate it slant height (b)calculate it total surface area,leave answer in terms of it

base radius = r = 5 cm
cone height = h = 12 cm
Use Pythagoras theorem to find slant height
slant height, L = sqrt(5²+12²)
=sqrt(169)=13 cm
Total surface area
= π r²+πrL
Substitute numerical values to get numerical answer. 
pls help me out,dis is my first time

13cm

Pleasea help me out am stock

YES

Using pythagoras rule
L^2/l square. 5^2 + 12^2.
25+144=169.
L=square of 169=13
Slant 13cm
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