The length, breadth and height of a room are 18cm, 15cm and 12cm respe

1.	The length, breadth and height of a room are 18cm, 15cm and 12cm respectively. ithas 2 doors each 6m by 3m and 3 windows each 4m by 2m. Find the cost of white washing its wall at 75 paisa per square metre.
Answer» $\huge\mathbb{\pink{QUESTION ♡- }}\star{}$ The length, BREADTH and height of a room are 18CM, 15cm and 12CM RESPECTIVELY. it has 2 DOORS each 6m by 3m and 3 windows each 4m by 2m. Find the cost of white washing its wall at 75 paisa per square metre. $\huge{\mid{\fbox{\tt{αղsաҽɾ}}\mid}}$ ⇛It is given that length, breadth and height of a room are 8 m, 5 m and 3 m respectively. ⇛Area of four walls of the room is: 2h(l+b) ⇛A=2h(l+b)=2×3(8+5)=6×13=78 m2 ⇛Area of the ceiling is: A=l×b=8×5=40 m 2 ⇛Total area of the four walls and the ceiling of the room is 78+40=118 m2 ⇛It is given that cost of white washing is Rs.15/m 2, therefore, ⇛Total cost of white washing is: 118×15=1770 $\: Hence, \: the \: cost \: of \: \\ white \: washing \: the \: \\ walls \: is \: Rs.1770. \\$ $hope \: this \: helps$ $\huge\boxed{\fcolorbox{black}{pink}{♛ItzArneet♛}}$

The length, breadth and height of a room are 18cm, 15cm and 12cm respectively. ithas 2 doors each 6m by 3m and 3 windows each 4m by 2m. Find the cost of white washing its wall at 75 paisa per square metre.

Answer»

$\huge\mathbb{\pink{QUESTION ♡- }}\star{}$

The length, BREADTH and height of a room are 18CM, 15cm and 12CM RESPECTIVELY. it

has 2 DOORS each 6m by 3m and 3 windows each 4m by 2m. Find the cost of white

washing its wall at 75 paisa per square metre.

$\huge{\mid{\fbox{\tt{αղsաҽɾ}}\mid}}$

⇛It is given that length, breadth and height of a room are 8 m, 5 m and 3 m respectively.

⇛Area of four walls of the room is: 2h(l+b)

⇛A=2h(l+b)=2×3(8+5)=6×13=78 m2

⇛Area of the ceiling is: A=l×b=8×5=40 m 2

⇛Total area of the four walls and the ceiling of the room is 78+40=118 m2

⇛It is given that cost of white washing is Rs.15/m

2, therefore,

⇛Total cost of white washing is: 118×15=1770

$\: Hence, \: the \: cost \: of \: \\ white \: washing \: the \: \\ walls \: is \: Rs.1770. \\$

$hope \: this \: helps$

$\huge\boxed{\fcolorbox{black}{pink}{♛ItzArneet♛}}$