The perimeter of this quarter circle with radius, r= 23mm.
Give your answer rounded to 1 DP.

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

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?