A cuboid of length 12 cm and breath 9 cm has a total surface area of 426 2
.
i- Find the height of the cuboid.
ii- Find its volume.
Answers
Answered by
5
Step-by-step explanation:
formula of total surface area is 2( lb+lh+bh)
426 = 2( 12*9 +12*h + 9*h)
426 = 2(108+12h+9h)
426 = 2(108+21h)
426 = 216+42h
426-216 = 42h
210 = 42h
h = 210/42
h = 5 cm
formula of volume of cuboid is = length × breadth × height
v = 12 ×9×5
= 540 cm^3
Similar questions