A gate having dimensions 2 m X 1 m is in the wall of 3 m X 5 m. If the cost of colouring is Rs. 100 per m2 , find the total cost of colouring the wall.
Answers
Answer:
Step-by-step explanation:
area of one wall =length×height=5×8=40 sq.m
Area of another adjacent wall =width×height=3×8=24 sq.m
Area of 4 walls =2×40+24×2−4.5−2.25=128−6.75=121.25
Cost of painting the four walls =121.25×25=3,031.25 Rs.
So, we don't require statement III.
hope it helps you✌
Answer:
length of the wall, l = 10 m = 100 cm
Breadth of the wall, b = 42 m = 4200 cm
Height of the wall, h = 5 m = 500 cm
Volume of the wall = l × b × h = 100 cm × 4200 cm × 500 cm = 21000000 cm3
Dimension of the brick = 42 cm × 12 cm × 10cm
∴ Volume of each brick = 42 cm × 12cm × 10 cm = 5040 cm3
Let the number of bricks required be n.
n × Volume of each brick = Volume of the wall
therefore, n= vol of the wall/ vol of each brick
n= 21000000cm³/5040cm³
n= 4166.67
Thus, the number of brick required is 4166.67