Respuesta :

[tex]\bf \textit{lateral area of a cylinder}\\\\ LA=2\pi rh\quad \begin{cases} r=radius\\ h=height\\ -----\\ r=4\\ h=5 \end{cases}\implies LA=2\pi (4)(5)\implies LA=40\pi [/tex]

Answer:  40π square units

Step-by-step explanation:  since, lateral area of cylinder=2πrh

   where r=radius=4 and h=height=5

    ⇒   lateral area= 2π×4×5

                               = 40π square units

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