Question

If the length , breadth ,depth of the cuboid is 19 cm. and its diagonal is5√5 cm.find its totla surface area

Answer 1

we know that,

total surface area of a cuboid is =2(lb+ bh+lh)

now,

l=b=h=19cm

therefore, tsa=2(19*19+19*19+19*19)

=2(361+361+361)

=2(1083)

2116sq.cm

Hope it helps