Question

The sum of length, breadth and height of a cubiod is 38 cm and the length of its diagonal is 22cm. Find the total surface area of the cuboid

Answer 1

L + b + h = 38 cm

also diagonal = 22 cm

so root over < l2 + b2 + h2> = 22

l2 + b2 + h2 = 484

(l + b + h)2 - 2lb -2bh -2hl = 484

(38)2 - ( 2lb + 2bh + 2hl) = 484

- ( 2lb + 2bh + 2hl) = 484 - 1444

- ( 2lb + 2bh + 2hl) = - 960

( 2lb + 2bh + 2hl) = 960

so TSA = 960 cm2

Answer 2

here..........



The surface area of cuboid is
960sq.cm


The solution to it is givenin the pic.

hope this helps ! ! !#