The whole surface area of cuboid is 214 cm^2  , volume is 210 cm^3 , and the area of base is 42 cm^2 ..find its edges ? 

 

 

Ans - 7cm , 6cm , 5cm

Asked by Mohdayaz9921 | 2nd Feb, 2019, 08:22: PM

Expert Answer:

Total surface area = 214 cm2
2(lb+bh+hl) = 214
Volume of cuboid = 210 cm3
lbh = 210
Given that area of base = 42 cm2
lb = 42
hence, h = 210/42 = 5 cm
2(lb + bh + hl) = 214
42 + bh + hl = 107
bh + hl = 65
5b + 5l = 65
b + l = 13 and lb = 42
Solving both equations we get l = 6 cm and b = 7 cm


Answered by Sneha shidid | 4th Feb, 2019, 11:08: AM