Math, asked by muskan2039, 1 month ago

answer this question
find the total red coloured paper used ?
480 sq inches
693 sq inches
240 sq inches
557 sq inches​

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Answers

Answered by QuestionAnswerAsker
1

Answer:

1970 in^{2}

Step-by-step explanation:

480 inch^{2} + 693 inch^{2} + 240 inch^{2} + 557 inch^{2}

= (480 + 693 + 240 + 557) inch^{2}

= 1970 inch^{2}

Answered by Eutuxia
6

Question~

For the decoration on Divya's birthday, Keerthana and Megha prepared coloured paper penants in the form of triangles in three sizes.

  • Blue coloured penants of sides 3 inches, 4 inches, 5 inches.
  • Yellow coloured penants of sides 8 inches, 5 inches, 5 inches.
  • Red coloured penants of sides 5 inches, 7 inches, 8 inches.

They prepared 40 penants of each colour.

⇒ Find the total red coloured paper used?

  • 480 sq inches
  • 693 sq inches
  • 240 sq inches
  • 557 sq inches​

----------------

Given :

  • Sizes of Red coloured penants = 5 inches, 7 inches, 8 inches.
  • Prepared 40 penants of each colour.

To find :

  • the total red coloured paper used

Solution :

⇒ Let's find the area of red coloured penant.

Semi-Perimeter = a + b + c/2

= 5 + 7 + 8/2

= 20/2

= 10 inches

Area = √s (s - a) (s - b) (s - c)

= √10 (10 - 5) (10 - 7) (10 - 8)

= √10 (5) (3) (2)

= √10 × (5) × (3) × (2)

= √300

= 17.3205081 inches²

40 papers = 17.3205081 × 40

= 692.820324

= 693 (approx)

  • Therefore, the total red coloured paper used is 693 sq inches.
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