Question

2 cubes each of volume 64 cm' are joined end to end. Find the surface area of the resulting cuboid
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Answer 1

Answer:

volume of cube = 64

(side)^3 = 64

side = √64

side = 4

dimensions of cuboid

length = 4+4 = 8

breadth = 4

height = 4

total surface area = 2(lb+ bh +hl)

= 2(8×4+4×4+4×8)

= 2(32+16+32)

= 2(80)

= 160 cm^2

Step-by-step explanation:

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Answer 2

side³ = vol of cube

side³=64

side=

$\sqrt[3]{64}$

side= 4cm

look at the image attached

then the dimensions of the cuboid=

length= 8

breadth=4

height=4

substitute the above vals in formula of surface area of cuboid and get the result

hope it helps

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ps sry the fig is quite messy but hope it serves the purpose.