Question

Un con circular drept are R= 8 cm,h=6cm si G= 10.Sa se calculeze Ab,A|,At si V

Answer 1

   
[tex]\displaystyle\\ A_b = \pi R^2 = \pi \cdot 8^2 = \boxed{\bf 64\pi~cm^2}\\\\ A_l= \frac{2\pi RG}{2}=\pi RG =\pi\cdot 8 \cdot 10 = \boxed{\bf 80\pi~cm^2} \\\\ A_t=A_b + A_l = 64\pi + 80\pi = \boxed{\bf 144\pi~cm^2}\\\\ V= \frac{A_b \cdot h}{3}= \frac{64\pi \cdot 6}{3}= 64\pi \cdot 2 = \boxed{\bf 128\pi~cm^3} [/tex]