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How to do 12.2 third sum..I …

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How to do 12.2 third sum..I want explanation

Posted by Sumayya Ruksana 6 years, 7 months ago

CBSE > Class 09 > Mathematics

2 answers

Sumayya Ruksana 6 years, 7 months ago

Thank you

0Thank You

Gaurav Seth 6 years, 7 months ago

Radha made a picture of an aeroplane with coloured paper as shown in figure. Find the total area of the paper used.

Ans. Area of triangular part I: Here, Semi-perimeter = 5.5 cm

Therefore, Area =

= =

Area of triangular part II = Length x Breadth

Area of triangular part III (trapezium):

= (AB + DC) = (1 + 2)

= =

Area of triangular parts IV & V:

Total area = 2.4825 + 6.2 + 1.299 + 9

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CBSE > Class 09 > Mathematics