Question

4/10 what is the diameter of the first circle added to the sketch? 40 mm 80 mm 60 mm 100 mm

Explanation:

Assuming this is a standard problem (often in basic geometry or software - related sketching where the first circle added has a diameter of 80 mm, likely from common sketching tool defaults or problem - set context where this is the expected answer among the options).

Answer:

B. 80 mm (assuming the options are labeled A - D with A: 40 mm, B: 80 mm, C: 60 mm, D: 100 mm)