(50 POINTS) Given square SQAR with QR = 18. Find the perimeter and area of SQAR in simple radical form.

Perimeter:units

Area:units

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

In what organelle does photosynthesis take place?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0