The answer is 30.25 or as a fraction 30 1/4
It should be a.), all plant cells have a cell wall made of cellulose, which acts as exoskeleton and makes them so stable. However on a bigger level this plant cells can also form cellulose fibers, so that c.) is not completely false :)
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Step-by-step explanation:</h3>
let us drawn side AB11 cm
again let us drawn p from line AB 6 cm