The formula for of a ball is:
S = 4*r^2*pi
or if we express diameter in it:
S = D^2*pi because D=r/2
S1-S2 = (D1^2 - D2^2)*pi
1 = (100 - D2^2)*3,1415
100-D2^2 = 1/3.1415
D2^2 = 100-1/3.1415
D2 = 9.984cm
which means that Diameter will decrease by rate of:
0.016cm/min
If you mean 2x=40 x=20
but if you mean x^2=40 i think its x=80
Answer:
-4r
Step-by-step explanation:
r + -5r
Factor out r
r( 1-5)
r(-4)
-4r
Alright! In order to do number 3, you first have to simply what you have. So:
√4x[12-√(10-6)] → √4x[12 ÷ √4]
Now, to find the square root of a number you simply ask yourself, "What number times itself will give me that number?". So, the number two times itself is equal to 4. So:
√4 = 2. Plug in this value for √4.
2x[12 ÷ 2] → 2x6
Multiply:
2x6 = 12