Answer:
Sir William Crookes invented the cathode ray tube in 1878, but these discoveries took many years to merge into the common ground of television. His mechanical system used a scanning disk with small holes to pick up image fragments and imprint them on a light-sensitive selenium tube. A receiver reassembled the picture.
I would say I messed up but I am willing to fix whatever mistake I made. And say it kindly
Answer:
what is the question hear?????
Answer: UPS
Explanation:
The redundancy effort that should be put in place to ensure the data remains available is the Uninterruptible Power Supply(UPS).
Uninterruptible Power Supply (UPS) is necessary in the provision of battery backup power when there's drop or stoppage in the flow of electricity. With regards to the question, it'll ensure that data is not lost at the system level in the event of a blackout.
A semi-circle is a half circle. Find the area of a semi-circle with a radius of 8.6 meters.
The area of the semi-circle is