2. The blackboard in your classroom is 70 cm by 40 cm in dimension. Find how
much of chart paper is needed to cover it completely. Also, calculate the
total length of the frame needed around
18 m
it.
lo
.
Answers
Answered by
4
Step-by-step explanation:
lenght of black board=70
breadth of black board= 40 cm
area of black board = l×b
=70×40
=2800cm^2
we need a chart paper whose area 2800cm^2
to cover black board.
total lenght of the frame= perimeter of black board
so perimeter of black board = 2(l+b)
2(70+40)
220 cm.
Answered by
0
Step-by-step explanation:
leanth of black board =70
breath black board =40
area of black board =l×b
= 70×40
= 2800 ans
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