To solve for the surface area of a sphere, the formula is 4*pi*r^2. Since we are using 3.14 instead of pi, the formula becomes 4*3.14*r^2. To solve, all we have to do is substitute in the radius for r and solve it like a normal question.
SA=4*3.14*r^2
SA=4*3.14*6^2
SA=452.16
Since we used 3.14 instead of pi, we have to say this is an approximate answer. This means the surface area of this sphere is 452.16 square inches.
Answer:
The electrician has 14 feet of cable.
Please don't post masses of questions all at once. 1-2 problems per post would be more realistic and fairer to others who need help.
Regarding <span>x-2/5 = 1/5
We are to solve for x. To do this, let's remove the fractions by mult. all 3 terms by 5. Then 5x - 2 = 1, or 5x = 3.
Dividing both sides by x, we get x = 3/5 (answer). Check this by subst. 3/5 into the original equation.</span>
Answer:
6x/4-24=x-2
6x/4-24/1=x-2
(6x/4)1-(24/1)4=x-2
6x/4-96/4=x-2
(6x-96)/4=(x-2)/1
Then cross multiply to get this;
(6x-96)1=(x-2)4
6x-96=4x-8
6x-96+96=4x-8+96
6x=4x+88
6x-4x=4x-4x+88
2x=88
Divide both sides by 2
2x÷2=88÷2
x=44
Thank you.
BY GERALD GREAT.
