The rockford's have a square play area that is built around a center sandbox that is in the shape of a circle. the sides of the play area are tangent to the circle. they want to determine the amount of grass seed to buy for the spring. if the diameter of the circular sandbox is represented by d use function notation to write a function to represent the play area only.

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.