Question

A cuboid of length of 12 cm and breadth 9cm has a total surface area of 426m square.
Find the height of the cuboid
show steps and explajn​

Answer 1

$\huge \bold{heya \: friend}$

We know that,

TSA of a cuboid=2(lb+bh+hl)

Now, it is given that

Length=12 cm

Breadth=9 cm

TSA=426 m²

➡2(12×9+9×h+h×12)=426

➡2(108+9h+12h)=426

➡2(108+21h)=426

➡216+42h=426

➡42h=426-216

➡42h=210

➡h=5 cm