Find the volume, curved surface area and total surface area of th… - Vidyadip

Question

Find the volume, curved surface area and total surface area of the cylinders whose dimensions are:
Radius of the base = 14dm and height = 15m

✓

Answer

Radius of the base of a cylinder (r),
= 14dm = 1.4m.
Height (h) = 15m

Volume:

$=\pi\text{r}^2\text{h}=\frac{22}{7}\times(1.4)^2\times15\text{m}^3$

$=\frac{22}{7}\times1.4\times1.4\times15\text{m}^3=92.4\text{m}^3$

Lateral surface area $=2\pi\text{rh}$

$=2\times\frac{22}{7}\times1.4\times15\text{m}^2=132\text{m}^2$

Total surface area $=2\pi\text{r}(\text{h}+\text{r})$

$=2\times\frac{22}{7}\times1.4\times15\text{m}^2=132\text{m}^2$

$=8.8(16.4)\text{m}^2=144.32\text{m}^2$

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