10. The perimeter of rectangle is 20cm. If its breadth is 6cm, then its length is 4cm 6cm 10cm 14cm
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2
Answer:
HIII
answer = 4cm
Step-by-step explanation:
length = ? let length be " l "
breadth = 6cm
perimeter = 20cm
formulae of perimeter = 2 ( l + b )
SOLUTION
2( l + b ) = 20
2l + 2b = 20
2l+ 2×6 = 20
2l + 12 = 20
2l = 20 - 12
2l = 8
l =
l = 4
Therefore , LENGTH = 4CM
Answered by
0
Given - Perimeter of rectangle = 20 centimetres
Breadth of rectangle = 6 centimetres
Find - Length of triangle from perimeter and breath of rectangle.
Solution - Perimeter of rectangle is calculated by the formula = 2 (l + b), where l denotes length and b denotes breadth.
Keeping the values in formula-
20 = 2 (l + 6)
Solving the formed equation, we get -
10 = l + 6
l = 10 - 6
l = 4 centimetres
Therefore, length of rectangle is 4 centimetres.
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