CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The dimensions of a cuboid are in the ratio 5 : 3 : 1 and its total surface area is 414 m2. Find the dimensions.


Solution

Ratio in dimensions = 5:3:1 
Let length  (l) = 5x
breadth (b) = 3x
and height (h) = x
Surface area = 2(l×b+b×h+h×l)
= 2(5x×3x×x+x×5x)
= 2(15x2+3x2+5x2)=2×23x2=46x2
46x2=414x2=41446=9
x=9=3
Length = 5x = 5×3=15 m
breadth = 3x = 3×3=9 m
height = x=3 m


Mathematics
RD Sharma
Standard VIII

Suggest Corrections
thumbs-up
 
1


similar_icon
Similar questions
View More


similar_icon
Same exercise questions
View More


similar_icon
People also searched for
View More



footer-image