As blood passes through the capillary bed in an organ the

Question

Solve the all parts of given problem:

Problem: As blood passes through the capillary bed in an organ, the capillaries join to form venules (small veins). If the blood speed increases by a factor of 4.44 and the total cross-sectional area of the venules is 9.80 cm².

Part A: What is the total cross-sectional area of the capillaries feeding these venules?

Part B: How many capillaries are involved if their average diameter is 10.0 m.

Please, show work so I can understand the concept. Thank you.