ICSE Class X Math 2013 Solved Paper
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Using graph paper, plot the points A ( 6 , 4 ) B ( 0 , 4 )
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Question : 19
Total: 46
Find its perimeter.
Solution:
From the graph, AB = 6 cm , BB ′ = 8 cm
In△ ABB ′
( AB ′ ) 2 = AB 2 + ( BB ′ ) 2
= ( 6 ) 2 + ( 8 ) 2 = 36 + 64 = 100
AB ′ = 10 = A ′ B
(ABA ′ B ′
Perimeter of AB ′ B ′ = A ′ B ′ + AB ′ + AB + A ′ B
= 6 + 10 + 6 + 10
= 32 units.
In
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