CBSE Class 9 Answered
If a workman can paint at the rate of 20 m2 an hour, find the time required to paint the cuboidal box of dimensions 20 m × 26 m × 10 m.
Asked by Topperlearning User | 23 Aug, 2017, 01:02: PM
Expert Answer
Length (l) =20 m, breadth(b)=26 m and height(h)=10 m
Surface area of a cuboid =
= 2{(20 ×26) + (26 × 10) + (20 × 10)} m2
= 1960 m2
20 m2 of area is painted in 1 hr
Therefore, 1960 m2 of area is painted in =98 hours
Answered by | 23 Aug, 2017, 03:02: PM
Application Videos
Concept Videos
CBSE 9 - Maths
Asked by sg871787 | 11 Jan, 2021, 08:01: AM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by sy5620331 | 07 Jun, 2020, 01:51: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by dhyeyvachani26.tl | 12 Apr, 2020, 04:10: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by arajeevshashank | 03 Dec, 2019, 06:33: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by raviraj23032003 | 15 Jul, 2018, 09:28: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 23 Aug, 2017, 12:56: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 23 Aug, 2017, 12:57: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 23 Aug, 2017, 12:58: PM
ANSWERED BY EXPERT