Question

7.
The length, breadth and height of a room are 8.25 m, 6.75 m and 4.50 m
respectively. Determine the longest tape which can measure the three dimensions
of the room exactly.
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Answer 1

here as we know that,

l=8.25

b=6.75

h=4.50

now let's three combination

perimeter =2(l+b)

2×8.25+6.75

2x15

30 m

top = bottom=30

now face one & three

2 (l+h)

2 (8.25+4.50)

25.5 m

now face two & fourth

2 (b+ h)

2x 6.75 +4.50

22.5 m

now totally edge length,

2 (22.5 + 25.5+30)

150 m