Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

a wall 15m long,30cm wide and 4m high is made of bricks,each measuring (22cm, 12.5cm, 7.5cm). if 1/12 if total volume of the wall consist of morter, how many bricks are there in wall?
Asked by 2002rishabhverma | 25 Oct, 2015, 12:45: PM
answered-by-expert Expert Answer
L e n g t h space o f space t h e space w a l l equals 15 space m W i d t h space o f space t h e space w a l l equals 30 space c m equals 30 over 100 space m equals 0.3 space m H e i g h t space o f space t h e space w a l l equals 4 space m V o l u m e space o f space t h e space w a l l equals 15 cross times 0.3 cross times 4 equals 18 space m cubed G i v e n space t h a t space h a l f space o f space t h e space t o t a l space v o l u m e space o f space t h e space w a l l space c o n s i s t space o f space m o r t a r. T h u s comma space t h e space v o l u m e space o f space t h e space t o t a l space b r i c k s space i n space t h e space w a l l equals 18 over 2 equals 9 space m cubed L e n g t h space o f space a space b r i c k equals 22 space c m equals 22 over 100 space m equals 0.22 space m W i d t h space o f space a space b r i c k equals 12.5 space c m equals fraction numerator 12.5 over denominator 100 end fraction space m equals 0.125 space m H e i g h t space o f space a space b r i c k equals 7.5 space c m equals fraction numerator 7.5 over denominator 100 space end fraction space m equals 0.075 space m V o l u m e space o f space a space b r i c k equals 0.22 cross times 0.125 cross times 0.075 space m cubed N u m b e r space o f space b r i c k s equals fraction numerator V o l u m e space o f space a l l space b r i c k s over denominator V o l u m e space o f space a space b r i c k end fraction equals fraction numerator 9 over denominator 0.22 cross times 0.125 cross times 0.075 end fraction almost equal to 4363 N u m b e r space o f space b r i c k s equals 4363
Answered by Vimala Ramamurthy | 25 Oct, 2015, 06:09: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Maths
find the volume of food of a closed box whole external dimension are 50 cm ×30 cm ×25 cm and thickness of the wood pluck is 2 cm also find the weight of the box if diversity of wood is 0.05 g cm
Asked by nitusingh6796 | 07 Mar, 2024, 11:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
can you help me to answer 5question.
question image
Asked by swatipuspapatel | 11 Oct, 2020, 10:52: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
 The area of four walls of a room of height 5 m is 144 m2. If the total surface area of the room is 244 m2 then its length is
Asked by arajeevshashank | 29 Nov, 2019, 06:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
The surface area of a cuboid is 3328 m2. If its dimensions are in the ratio 4:3:2. Find the volume of cuboid.
Asked by Ravindar | 18 Jun, 2019, 06:44: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Three cubes of metal whose edges are 2 cm, 3 cm and 4 cm are melted and a new cube is made. Find the volume of the new cube.
Asked by Topperlearning User | 23 Aug, 2017, 03:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
How many cubes of edge 1 cm can be made out of a cube having an edge of length 4 cm?
Asked by Topperlearning User | 23 Aug, 2017, 03:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Find the volume of a cube whose total surface area is 1014 m2.
Asked by Topperlearning User | 23 Aug, 2017, 02:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Find the height of the cuboidal tank with square base of area 169 m2, if it can hold 253500 litres of water.
Asked by Topperlearning User | 23 Aug, 2017, 02:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
How many bricks having dimensions 20 cm × 5 cm × 5 cm are required to make a wall 2.5 m long, 0.5 m broad and 5 m in height?        
Asked by Topperlearning User | 23 Aug, 2017, 03:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
A village has a tank measuring 15 m × 10 m × 5 m. For how many days will the water will last if there is a population of 2500 and each person requires 100 litres of water per day?
Asked by Topperlearning User | 23 Aug, 2017, 03:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×