find the total surface area of a cuboid obtained by joining two cubes of edges 'a' unit side-by-side
Answers
The total surface area of a cuboid is 10a² units.
To find : The total surface area of a cuboid.
Given : Cuboid obtained by joining two cubes of edges "a" unit side by side.
Formula :
Total surface area of a cuboid = 2(lw+lh+hw)
Finding area of cuboid :
l = length = a units
w = width = a units
(If a cuboid obtained by joining two cubes of edges, the height becomes "a+a = 2a". For better understanding refer the diagram.)
h = height = a+a = 2a units
Total surface area (T.S.A) of a cuboid = 2(lw+lh+hw)
= 2 [(a×a)+(a×2a)+(2a×a)]
= 2 [a²+2a²+2a²]
= 2 [5a²]
= 10a² units.
Thus, the total surface area of a cuboid is 10a² units.
To learn more...
1. brainly.in/question/2469087
2. brainly.in/question/920788
hope it is helpful for you!
