Q$.1($a$)($i$)$ An area of $20,000$ hectares has to irrigated for rice crop having field data as follows:

$\backslash$table$[[$Month$,$June,July,August,September,October$],[$Delta $($cm$),20,30,40,35,20]]$

Determine the design capacity of a canal for supplying water to the above crop, assuming no loss of water in conveyance.