Answer:
32
Step-by-step explanation:
We let the length of the square be l, the diagonal be z and the area be A.
Then by Pythagoras theorem;

The are of a square of length l is given as;

Combining these two equations yields;


Next, we have been given;

We are required to find;
when z = 4
By chain rule;

Differentiating
with respect to z yields;

Therefore,
= 8z
When z is 4m the area of the square will be increasing at a rate of;
8m/min * 4m = 32
Answer:
12
Step-by-step explanation:
16+14-6/10-8
30-6/2
24/2
12
Answer:
Green = 25 Yellow = 30 Red = 15 Blue = 40
If there are 25 there should be five groups so there are 5 groups and 6 yellow for each so 6 x 5 = 30 so 30 yellow
if there are 30 yellow and 1 read marble for each 2 there are 15 bcuz 30 divided by 2 = 15
now if you add the red and green you get 40.
Hopefully thats right!