click on this link exercise-11A
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click on this link EXERCISE-10B
click on this link EX-10A
click on this link chapter – 16 ( perimeter and area)
click on this link class-7-ex-5b and 5c
click on this link EX-5A
click on this link Class-7-Ex-4e
click on this link EX-4D-
click on this link EX-4C
click on this link Ex-4A-4B