The length of 6.5 doors is 15.47 metres. How long is one door?
Answers
Answer:
Given:
Given the room dimension is 8.5 m by 6.5 m by 3.4 m
There are 2 doors.
Each door is 1.5 m by 1 m.
There are 2 windows.
Each window is 2 m by 1 m.
To Find:
The cost of painting its 4 walls at Rs 160
per m2
Solution:
Find the area of the 4 walls including the doors:
Area of the 4 walls = 2(8.5 + 6.5) x 3.4
Area of the 4 walls = 102 m?
Find the area of the two doors:
1 door = 1.5 x 1
1 door = 1.5 m?
2 doors = 1.5 x 2
2 doors = 3 m?
Find the area of the two windows:
one window = 2 x 1
one window = 2 m?
two windows = 2 x 2
two windows = 4 m2 =
Find the area of the 4 walls without the
doors:
Area = 102 - 3 - 4
Area = 95 m²
Find the cost:
1 m2 = Rs 160
95 m? = 95 x 160
95 m? = Rs 15,200
Step-by-step explanation:
therefore.... answer is 15,200 Rs
Answer:
Length = 8.5 m
Breadth = 6.5 m
Height = 3.4 m
Area of the four walls = {2(l + b) h} sq. units
= {2(8.5 + 6.5) 3.4}m2 = {30 3.4} m2 = 102 m2
Area of one door = (1.5 1) m2 = 1.5 m2
∴ Area of two doors = (2 1.5) m2 = 3 m2
Area of one window = (2 1) m2 = 2 m2
∴ Area of two windows = (2 2) m2 = 4 m2
Total area of two doors and two windows = (3 + 4) m2
= 7 m2
Area to be painted = (102 - 7) m2 = 95 m2
Rate of painting = Rs 160 per m2
Total cost of painting = Rs (95 160) = Rs 15200