Question

Determine o volume de um cilindro de 4 cm de diâmetro e 8 cm de altura. ​

Answer 1

$\large\boxed{\begin{array}{l}\underline{\rm Volume\,do\,cilindro}\\\sf V=\pi\cdot r^2\cdot h\\\tt dados\begin{cases}\sf d=4~cm\longrightarrow r=\dfrac{4}{2}=2\,cm\\\sf h=8~cm\\\sf V=?\end{cases}\\\underline{\rm soluc_{\!\!,}\tilde ao\!:}\\\sf V=\pi\cdot r^2\cdot h\\\sf V= \pi\cdot 2^2\cdot8\\\sf V=\pi\cdot 4\cdot8\\\sf V=32\pi~cm^3\end{array}}$

Answer 2

Resolução!

r = d/2

r = 4/2

r = 2

$v = \pi.r {}^{2} .h \\ v = \pi.2 {}^{2} .8 \\ v = \pi.4.8 \\ v = 32\pi \\ v = 100.48cm {}^{3}$

Espero ter ajudado