Question

Can someone help me pls

Answer 1

Answer:

3 cm

Step-by-step explanation:

• $V_{cylinder} = 189\pi \: cm^3$ (Given)

• $h_{cylinder} = 21\: cm$ (Given)

• Formula for $V_{cylinder}$ is given as:

• $V_{cylinder} = \pi r^2h$

• $\implies 189\pi = \pi r^2(21)$

• $\implies \frac{ 189\pi}{21\pi} = r^2$

• $\implies 9 = r^2$

• $\implies \pm\sqrt 9 = r$

• $\implies \pm 3 = r$

• Length of radius can not negative

• $\implies r = 3 \: cm$

Hope it helps you in your learning process.

Answer 2

Give the person who answered Brainly bc they are correct :D