Which of the following expressions represents the length of the diagonal joining two…

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Three-Dimensional Geometry · Introduction to Three-Dimensional Geometry

Problem

Which of the following expressions represents the length

d

of the diagonal joining two opposite vertices of a cuboid whose length, breadth and height are

l

b

and

h

respectively? (a)

d=\sqrt{(l+b)^{2}+h^{2}}

(b)

d=l+b+h

(c)

d=\sqrt{l^{2}+b^{2}+h^{2}}

(d)

d=\sqrt{l^{2}+b^{2}}