Question

14 m long and 8 m wide. It has two doors, each measuring 2 m by 15 mand one wind
ring 15 by 12. The cost of white-washing its four walls at 7.50 per
m990. Find the height
​

Answer 1

Answer:

2m8m=2×100+8=208cm,1.2m=1.2×100cm=120cm

Area of whole door = 208×120cm  

2

=24,960cm  

2

 

Area of 1 pane = 40cm×20cm=800cm  

2

 

Area of 4 pans = 4×800cm  

2

=3200cm  

2

 

Area of wood = Area of whole door - Area of panes

=(24960−3200)cm  

2

=21,760cm  

2

 

1m  

2

=10,000cm  

2

∴21760cm  

2

=  

10,000

21760

​

=2.176m  

2

 

Step-by-step explanation: