Question

Lavanya hold a Japanese folding fan in her hand as shown in figure. It is shaped like a sector of a circle. The inner and outer radii are 14 cm and 21 cm. The fan has three colour materials (i)If the region containing the pink colour makes an angle of 02-72⁰ at the centre, what is the area of the region having pink colour? (a) 214 cm² (b) 154 cm² (c) 275 cm² (d) 196 cm² (it) If the region containing the orange colour makes an angle of 8, = 54 at the centre, what is the area of the region having orange colour?

(a) 175.5 cm² (b) 115.5 cm²

(c) 198.5 cm² cm²

(d) 210.6

(iii) If the region containing the red colour makes an angle off, = 45° at the centre, what is the perimeter of the region having red colour?

(n) 41.5 cm

(b) 28.9 cm

(c) 56.5 cm (d) 62.4 cm

(iv) What is the area of the region

having radius 14 cm? (a) 324.6 cm² (c) 262.2 cm (b) 292.2 cm² (d) 310.4

cm²​

Answer 1

Answer:

The dimensions of equal strips are 25 cm, 25 cm and 14 cm.

Then area of each strip=s(s−a)(s−b)(s−3)=32(32−25)(32−25)(32−14)=32×7×7×18=168

Then total the area of each type of paper needed=168×5=840 cm2

Step-by-step explanation:

If i am wrong let me know plz thank you!

Hope i helped! :)

Answer 2

Step-by-step explanation:

the region containg the pink colour makes an angle of 72° at the centre what is the area of the region having pink colour