350 inches squared is the answer, because this problem is asking for the surface area. If it was asking for the volume it would have to be asking how much space the cake was taking up, but instead it is asking how much frosting is covering the cake, minus the bottom, aka. the surface are.
Given dV/dt , find dh/dt.
Use volume formula for cone.
Define radius in terms of height.
Differentiate with respect to 't'.
Sub in given values, dV/dt = 12, h=2.
Solve for dh/dt.
Emma: seventy-five hundredths of a mile
Charles: seven and five tenths of a mile
Distance: 0.75 miles
Emma: 75/100 miles
Emma: 0.75 miles, correct as this is the correct distance from the park
Charles: 7 and 5/10 miles
Charles: 7+ 0.5=7.5 miles, incorrect as this is far more than the distance to the park
Hi hope I help, so first 123×20 which = 2,460 then, 2,460×31 and the answer is 76,260
30 in = 2.5 ft
A = (1/2)(2.5 ft)(3 ft) = 3.75 ft²