Math, asked by Anonymous, 4 months ago

abee koi to btado
MERI tution teacher aane waali h

aaj tum log mrva kr he manoge​

Attachments:

Answers

Answered by Anonymous
31

{\huge{\rm{\fcolorbox{lime}{black}{\pink{Question\checkmark}}}}}

★ The length and the breadth are in ratio 4 : 3 and its height is 5.5 m . The cost of decorating its walls at 6.60 Rs per m² is 5082 Rs . Find lengthand breadth ..

{\huge{\rm{\underbrace{\pink{Answer\checkmark}}}}}

Let the ratios be 4x and 3x

It means ,

  • Length = 4x
  • Breadth = 3x

→ Finding Total Surface Area ( T.S.A. )

 \mapsto  \rm\: csa \:  = 2 h\: (l + b)

 \mapsto  \rm \: csa \: = 2 \times 5.5 \times (4x + 3x)

 \mapsto  \rm \: csa \:  = 11 \times (7x)

 \mapsto \rm \: csa \:  = 77x

→ Cost of decorating

 \star \rm \: cost \: of \: decoration \:  = csa \:  \times  \: rate

 \mapsto  \rm\: 5082 = (77x) \times 6.6

 \mapsto \rm \: 770 = 77x

 \mapsto \rm \: x = 10

Now , Putting the value of x to Find L & B

  • L = 4x = 40m
  • B = 3x = 30m
Answered by Anonymous
7

tera ANSWER ab khush ...☺️☺️

Attachments:
Similar questions