The two cylinders, A and B are mathematically similar. The height of cylinder B is twice the height of cylinder A
The total surface area of cylinder A is 180cm squared
Calculate the total surface area of cylinder B.
(3 marks
W
P

720 cm²

Explanation:

Formula for total surface area of a cylinder is;

TSA = 2πr² + 2πrh

We are told that the total surface area of cylinder A is 180cm². Thus;

2πr² + 2πrh = 180

Now, we are told that the height of cylinder B is twice the height of cylinder A.

This means that the length scale factor is 2. And as such the area scale factor is 2² = 4.

Thus area of cylinder B = 180 × 4 = 720 cm²

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.