2 cubes each of volume 125m3 are joined end to end find the surface area of resulting cuboid

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Solution

$V o l u m e o f c u b e = 125 c m^{3} E a c h s i d e o f c u b e = \sqrt[3]{125} = 5 c m O n j o i n i n g 2 s u c h c u b e s t h e d i m e n s i o n s o f r e s u l t i n g c u b o i d, l = 10 c m w = 5 c m h = 5 c m S u r f a c e a r e a o f c u b o i d = 2 (l \times w + w \times h + h \times l) = 2 (10 \times 5 + 5 \times 5 + 5 \times 10) = 2 \times 125 = 250 c m^{2}$

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