Year 10 bit map sizes

• Computing
• Upper Secondary (Key Stage 4)
• GCSE

Year 10 bit map sizes

By the end of this lesson you will be able to, describe what a pixel is and calculate the size of a image file.

In a lake, there is a patch of lily pads.​
Every day, the patch doubles in size. ​
If it takes 48 days for the patch to cover the entire lake, ​
how long would it take for the patch to cover half the lake?​​

1. 47
2. 24

How many pixels are in this image?
and​ what is a pixel?​

Hint - binary powers?

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