The curved part of this figure is a semicircle what is the best approximation for the area of this figure 24+9.125 units2
24+18.25 units 2
12+9.125 units 2
12+18.25 units 2

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

The tile along the edge of a triangular community pool needs to be replaced? ?

Ranck the following in order from least precise to most precise