The area of a circle is r^2pi and 2r = diameter. Thus r=diameter/2
r=6/2= 3 inches so the expression is 3^2*3.14 so I believe it's B
I'm not sure if this is a trick question but 1/2 because there are 2 options(yellow or blue) and one desired outcome(yellow)
Answer:
Step-by-step explanation:
its table to promise me
Answer: Rate of change of Area of the triangle = 2.75cm~/min
Step-by-step explanation:
If the present height of the triangle is 22cm and the height increases by 5cm/min. It means the height was 2cm four minutes earlier: 5cm for 1st min + 5cm for 2nd min + 5cm for 3rd min + 5cm for 4th min = 20cm after 4min.
Therefore height equals 22 - 20 = 2cm four minutes earlier.
Using the same four minutes for the base. Since the base shrinks at 1cm/min, for the base to shrink to 10cm it means it was 14cm four minutes earlier.
The Area of a triangle is given by
A = 1/2 × base × height
Therefore Area= 1/2× 10×22 = 110cm~
Since it took four minutes to get to this area, the rate of change of the area will be 110÷4 = 2.75cm~/min
Answer:
subtract 2.5 on both sides
