Math, asked by chaitanya48, 1 year ago

a cuboidal metal plate of 1 cm thickness 9 CM breath and 81 cm length is melted into 1 you find the total surface area of the cube

Answers

Answered by toplayer
54
vol of cuboid=l*b*h=1*9*81=729cm³
vol. of cube=vol. of cuboid....
a³=l*b*h
729=a³
a=9cm....
now SA=6*a²
=6*9*9=81*6=486cm²....ans
Answered by suhaniparhi
19

Thickness of cuboid = 1 cm

Breath of cuboid = 9 cm

Length of cuboid = 81 cm

Volume = l*b*h

Volume = 1*9*81 = 729 cm ^3

Volume of cube = volume of cuboid

a ^3 = 729

a = √729

a = 9 cm

Surface area = 6a^2

=6(9)^2

= 6*81 = 486cm^2

Similar questions