Question

whole surface of a cuboid is 214 cm², volume is 210 cm and the area
of the base is 42 cm². Find its edges.
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Answer 1

2(lb + b h + HL)=214

Lb + b h + h l = 107 ➡️1

Lbh = 210 ➡️2

Lb = 42 (area of base) ➡️3

Put in equation 2 from 3

h=5 cm ➡️4

Now using equations 1 ,4 and 3 5(l+b)=107-42=65

(l + b)=13 cm

Now we have to find two numbers whose sum is 13 and product is 42.

Such numbers are 7 and 6. Therefore length and breadth are 7 cm and 6 cm or vice versa and height is 5 cm.

Answer 2

Answer:

after solving these equations...

l= 6cm

b=7 cm