When does menstruation occurs in females?

As far as humans are concerned a period is a bleed from the womb (uterus) that is released through the vagina. Women have a period every 28 days approximately. However, some women may have a 24-day cycle while other may have a 35-day one. A period is part of the woman's menstrual cycle

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find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2