Describe an instance where you might use standard rounding. Describe an instance where you might use order of magnitude estimation.

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

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

it's a b and

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.