If a sphere has a radius of 2 cm, what is the approximate surface area of the sphere?
a. 12.1 cm
b. 33.5 cm
c. 50.3 cm
d. 100.5 cm

option C 50.3

Step-by-step explanation:

Surface area=4πr^2=4×22/7×2^2=352/7

Surface area=50.3

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg

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