How do you identify the radius of a circumscribed circle given a triangle's vertices?

A bicycle wheel has diameter of 28 cm lising. \( \pi=3 \), colculate the ercumfer of the wheel.

Activité 18 Dans le plan rapporté à un repère orthonormé \( (\mathrm{O}, \overrightarrow{\mathrm{i}}, \overrightarrow{\mathrm{j}}) \), on donne les points \( -\mathrm{A}(2,1), \mathrm{B}(4,3) \) et \( \mathrm{M}(\mathrm{x}, \mathrm{y}) \). a) Calculer \( \frac{\mathrm{MA}}{\mathrm{MB}}=\overrightarrow{A B}= \) b) En déduire une équation cartésienne du cercle de diamètre \( [\mathrm{AB}] \).

If a chord is 10 cm long, what can you say about its distance from the center of the circle?

A cube shaped box has a volume of 216 cubic centimeters. What is the length of a side of the box? \( \begin{array}{llll}\text { A. } 6 \text { centimeters } & \text { B. } 9 \text { centimeters } & \text { C. } 12 \text { centimeters } & \text { D. } 18 \text { centimeters }\end{array} \)

192 Due rombi sono equivalenti. Il primo ha il lato di 36 cm e l'altezza di 30 cm . Calcola la misura del lato del secondo rombo, sapendo che la sua altezza misura 10 cm .