Question

a black board is of length 300 cm and breadth 140 cm find the perimeter and area of the blackboard.

Answer 1

Length= 300cm , Breadth= 140cm
Perimeter of blackboard= 2(l+b)
=2(300+140)
=2×440
=880cm

Area of blackboard= l×b
= 300×140
= 42000cm²

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Answer 2

Answer:

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