Workout the area of this circle give your answer in terms of pi and state its units

The radius of a clock face is 8.5 centimeters. What is the area of the clock face? A. 53.38 cm2 B. 226.87 cm2 C. 907.46 cm2 D. 56.72 cm2

6x + 9 = 5x + 15 solve for x

A circle divided into 5 equal parts. What is the total angle measure of 4 parts

Which equation represents a line parallel to y - 2x=8

How many significant figures does. 00000004 have

Is 6/10 equal to 4/7

What is the minimum value of P=24x + 30y given the constraints

The cylinder shown has a volume of 54π cm3. In a similar cylinder, the dimensions have been doubled. What is the ratio of the volumes (small to large) ?

A sequence is defined that the first term is 4 and each term after the first term is found by adding 4/5 to the preceding term. What is the 8th term of the sequence?

A scientist is investigating a cell. The cell has a membrane thickness of 7.*10-8 m and has a surface area of 4.*10-8. The initial concentration inside the cell is n (0) = 0.6 M, and the scientist later observes that an (0.2) = 0.77 M.