Question

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Answer 1

Answer:

WELCOME IN MY ANSWER.

SOLNO.6~

LENGTH =40m

BREATHE=22m

AREA=L.×B.

=40×22

880.Ans .

SOLNO.7~

LENGTH =130cm.

BREADTH =30cm.

AREA=L.×B .

=130×30

=390cm. Ans

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Answer 2

6) In this case, perimeters of both the shapes will be same.

Perimeter = 2(40 + 22) = 124 cm

=> 4a = 124 cm

=> a = 31 cm

So, side of square = 31 cm

Area of square = 31² cm² = 961 cm²

And, area of rectangle = 40 × 22 cm²

= 880 cm²

Clearly, area of square is greater than that of rectangle.

7) Perimeter of rectangle = 130 cm

=> 2(l + b) = 130 cm

=> l + b = 65 cm

=> l + 30 cm = 65 cm

=> l = 35 cm

So, length of the rectangle is 35 cm.

Hence, area of rectangle = 35 × 30 cm²

= 1050 cm²

8) Area of the door = 2 × 1 m² = 2 m²

Area of the wall = 4.5 × 3.6 m²

= 16.2 m²

Area which is to be white washed =

16.2 m² - 2 m² = 14.2 m²

Cost of white washing 1m² area = 20

Cost of white washing 14.2 m² area =

14.2 × 20 = 284

Hope, it'll help you.....