Which is a rational number?

a. \[ \sqrt{16} \]

b. \[ \sqrt{8} \]

c. \[ \sqrt{18} \]

d. \[ \sqrt{20} \]

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?