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Answer:
Step-by-step explanation:
a = 4cm cube
a = 4cm
cubes when joined form cubiod
l =12cm, b = 4cm , h = 4cm TSA 0f 3 cubes = 6a² x3
TSA of cubiod = 2( lb + bh +hl) =( 6x 16) x3
= 2 ( 48 + 16 + 48) = 288cm²
= 2(112)
= 224cm²
LSA of cubiod = 2h (l+b) LSA of 3 cubes = 4a² x 3
= 2x4 x 16 = 4 x 16 x3
=128cm² = 192cm²
No, surface area is not equal to the sum of the surface area of the separate cubes.