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Mathematics
Mathematics
Problem
Which of the following expressions represents the length
d
d
d
of the diagonal joining two opposite vertices of a cuboid whose length, breadth and height are
l
l
l
,
b
b
b
and
h
h
h
respectively? a)
d
=
(
l
+
b
)
2
+
h
2
d=\sqrt{(l+b)^{2}+h^{2}}
d
=
(
l
+
b
)
2
+
h
2
b)
d
=
l
+
b
+
h
d=l+b+h
d
=
l
+
b
+
h
c)
d
=
l
2
+
b
2
+
h
2
d=\sqrt{l^{2}+b^{2}+h^{2}}
d
=
l
2
+
b
2
+
h
2
d)
d
=
l
2
+
b
2
d=\sqrt{l^{2}+b^{2}}
d
=
l
2
+
b
2
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