The radius of a hemisphere is 6 inches. which formula can be used to find the surface area of the hemisphere?

s=3pi(12)^2
s=2pi(12)^2
s=2pi(6)^2
s=3pi(6)^2

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

Which math sentence can be used to determine if the triangle is a right triangle?

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?