Request a call back

In cuboid the length of its diagonal is 5√5 and sum of its length breadth and depth is 19 than find it's TSA

Asked by manishbennalli | 01 Apr, 2020, 07:25: PM
Let l, b and h be the length, breadth and depth of a cuboid.
Given: h = 19 ... (i)
Also, given that the length of its diagonal is 5√5
Therefore, we have
√(l2 + b2 + h2) = 5√5
Squaring on both the sides, we have
l2 + b2 + h2 = 125 ... (ii)
Squaring equation (i),
(h)2 = 192 = 361
l2 + b2 + h2 + 2(lbbh + lh) = 361
From (ii),
125 + 2(lbbh lh) = 361
2(lbbh lh) = 361 - 125 = 236
Surface area of the cuboid = 2(lbbh lh) = 236 cm2.
Answered by Renu Varma | 02 Apr, 2020, 11:28: AM

## Application Videos

CBSE 10 - Maths
Asked by meet46159 | 04 Jan, 2021, 10:43: AM
CBSE 10 - Maths
Asked by manishbennalli | 01 Apr, 2020, 07:25: PM
CBSE 10 - Maths
Asked by subbukum | 10 Mar, 2020, 09:29: PM
CBSE 10 - Maths
Asked by claudiakoksisangma13 | 23 Feb, 2020, 09:45: AM
CBSE 10 - Maths
Asked by sheth4.ami4 | 21 Feb, 2020, 04:37: PM
CBSE 10 - Maths
Asked by swaroop.sandan | 24 Jan, 2020, 04:10: PM