Question

4. The curved surface of a cylindrical pillar is 264m?and its volume is 924m². The
diameter of the pillar is:
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Answer 1

Answer:

diameter of the pillar = 14m

Step-by-step explanation:

given the csa of the cylinder = 2$\pi$rh = 264m².

and volume,v of the cylinder = $\pi$r²h = 924m³

=> v/csa =>  $\frac{\pi r^2h}{2\pi rh}$ = $\frac{924}{264}$

              => $\frac{r}{2}$ = $\frac{231}{66}$

              => r = $\frac{231}{66}$ * 2

              => r = $\frac{7}{2}$ * 2

              => r = 7 m

=> diameter , d = 2r = 2*7 = 14m