Question

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alculate the area of shaded region. if 1cm^2 REQUIRES RS.120 FOR DECORATION.WHAT IS TBE TOTAL COST OF DECORATION IN SHADED PART.​

Answer 1

At first we have to find the area of the rectangle

ATQ

Area = l * b

=8 * 12

=96cm

I.e the are of the total surface area is 96

Now we have to find the area of the triangles

ATQ

Area of the first triangle = l*b*h

" " "" "" """ " " " = 5*5*3 => 75cm

Area of the 2nd triangle =l*b*h

" " " " " =5*5*3 =>75cm

I.e 75 added with 75 then subtracted with 96

=75+75-96

=54cm^

Now we have to find the price of shaded part

1\120*54=1\60*27

I.e 1\1620 we just have to reverse it

Ans= 1620 price for the shaded part 54cm^