CBSE Class 8 Answered
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 | 02 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 | 04 Feb, 2019, 11:08: AM
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