# 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

1. MathMate

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.

2. patience daniel

pls help me out,dis is my first time

3. pratik

13cm

4. Isaac

Pleasea help me out am stock

5. EMEKA

YES

6. Anonymous

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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