How many steps are there in the problem-solving process
1 answer:
You might be interested in
Answer:
The dimensions of the original rectangle are Length =12cm, Width=8cm
Step-by-step explanation
Let the length of the rectangle be x
Let the width of the rectangle be y
The perimeter of a rectangle is 40cm.
2(x+y)=40
Divide both sides by 2
x+y=20
If the length were doubled(2x) and the width halved(y/2), the perimeter would be increased by 16cm,i.e.(40+16)cm
Therefore:
Divide both sides by 2
From the first equation, x=20-y.
Substitute x=20-y into
Answer:
Step-by-step explanation:
The formula for the surface area of a cylinder is:
And we want to solve for the height h.
First, subtract from both sides. This yields:
Now, divide both sides by . This yields:
And we're done!