# A Mason Constructs a Wall of Dimensions (270 Cm × 300 Cm × 350 Cm) with Bricks, Each of Size (22.5 Cm × 11.25 Cm × 8.75 Cm) and It is Assumed that 1 8 - Mathematics

MCQ

A mason constructs a wall of dimensions (270 cm × 300 cm × 350 cm) with bricks, each of size (22.5 cm × 11.25 cm × 8.75 cm) and it is assumed that 1/8 space is covered by the mortar. Number of bricks used to construct the wall is

• 11000

• 11100

• 11200

• 11300

#### Solution

11200

Volume of wall = 270 × 300 × 350 cm3

"18 th of the wall filled with bricks" = (7/8xx270xx300xx350) "cm"^3

"Volume of each brick" = (225/10xx1125/100xx875/100) "cm"^3

=((9xx225xx35)/32) "cm"^3

Number of bricks used to construct the wall = "Volume of the wall compared of bricks"/"Volume of each brick"

=(7xx270xx300xx350xx32)/(8xx9xx225xx35)

=11200

Hence, the number of bricks used to construct the wall is 11200.

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#### APPEARS IN

RS Aggarwal Secondary School Class 10 Maths
Chapter 19 Volume and Surface Area of Solids
Multiple Choice Questions | Q 26 | Page 920
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