4.) The circumference of a circle is 26.8 m . What is the radius and diameter of the circle?

The coordinates of triangle ABC are \( \mathrm{A}\left(-4 \frac{1}{2},-2 \frac{1}{2}\right), \mathrm{B}\left(-4 \frac{1}{2},-1\right) \), and \( \mathrm{C}(6,-1) \). a. What is the distance between points A and B ? b. Give the coordinates for two points that are 4 units from point C . a. Points A and B are \( \square \) units apart. (Type an integer, fraction, or mixed number.)

The coordinates of triangle \( A B C \) are \( A\left(-4 \frac{1}{2},-2 \frac{1}{2}\right), B\left(-4 \frac{1}{2},-1\right) \), and \( C(6,-1) \) a. What is the distance between points A and \( B \) ? b. Give the coordinates for two points that are 4 units from point \( C \).

(Unit-AL) Uma célula esférica se dividiu em duas, preservando o volume total. Usando-se \( \sqrt[3]{2} \cong 1,26 \), se preciso, é correto estimar que o raio de cada uma das novas células será, em comparação com o da célula original, cerca de A. \( 20 \% \) menor. B. \( 30 \% \) menor. C. \( 40 \% \) menor. D. \( 50 \% \) menor. E. \( 60 \% \) menor.

\begin{tabular}{l} 6.2. A cylinder has a radius of 7 cm and height of 10 cm . \\ \( \square \) \\ \hline \( .2 .1 \quad \) Calculate the volume of the cylinder. (if \( \pi=3,14 \) ) \end{tabular}

a. Points A and B are 1.5 units apart. (Type an integer, fraction, or mixed number.) b. Give the coordinates of one point that is 4 units from point \( C \) in the x-direction. \( \square \) (Type an ordered pair.)