What should I ask???

Ahhh
Who gets lost in their thoughts thoughts easily?
I do
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Ascientist wants to find the radius in meters of his hemispherical dome he found that the surface area of the entire sphere containing the dome is 682 square meters which equation could he use to find the domes radius

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same

How do you work out 21.3-8= show your working. plz