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
1
Answer:
1970
Step-by-step explanation:
480 + 693 + 240 + 557
= (480 + 693 + 240 + 557)
= 1970
Answered by
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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