Study the following diagram, where point W lies on circle O.
Point C lies in the exterior of circle O.
Segment WC is tangent to circle O at point W.
CO¯¯¯¯¯¯¯¯, CW¯¯¯¯¯¯¯¯¯, and OW¯¯¯¯¯¯¯¯¯ are drawn in to create △OWC.
Circle O as described, where segment O W is labeled r.

If OW=9 and WC=12, what is CO?
Enter the correct value.

W is a right angle, so we have a right triangle with legs 9 and 12, which are three times 3 and 4, so a 3/4/5 right triangle, so the answer is three times 5,

15

15 units

Step-by-step explanation:

Pythagoras Theorem to be used,

1. a² + b² = c²

2. 9² + 12² = c²

3. 225 = c²

4. √225 = √c²

5. 15 = c

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.