The radius of a circular frisbee is 9.8 centimeters. using rounding to the nearest whole number, what is an estimate for the circumference of this circle? a. 50 cm b. 60 cm c. 65 cm d. 72 cm

Based on what i know about mean, this doesn't add up.

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .