A square with a side of 8 cm is enlarged by a scale factor of 3. What would be the side length of the new square? 22 cm
20 cm
18 cm
24 cm

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?