Question

A round table cover has six equal designs as shown in the figure. If the radius of the cover is 28 cm, find the cost of making the design
at the rate of Rs. 0.35 per cm2

Answer 1

use pi*r square*6
divided by 2 
radius = 28
and then multiply this by 0.35



HOPE YOU UNDERSTAND!!!!!!!!!!!

Answer 2

Answer:

Answer:

Good morning bro,

Step-by-step explanation:

Sum of all angles of triangle = 180°

∠A + ∠B + ∠O = 180°

⇒ 2 ∠A = 180° - 60°

⇒ ∠A = 120°/2

⇒ ∠A = 60°

Triangle is equilateral as ∠A = ∠B = ∠C = 60°

Area of equilateral ΔAOB = √3/4 × (OA)2 = √3/4 × 282 = 333.2 cm2

Area of sector ACB = (60°/360°) × π r2 cm2

                                           = 1/6 × 22/7 × 28 × 28 = 410.66 cm2

Area of design = Area of sector ACB - Area of equilateral ΔAOB

                       = 410.66 cm2 - 333.2 cm2 = 77.46 cm2

Area of 6 design = 6 × 77.46 cm2 = 464.76 cm2

Total cost of making design = 464.76 cm2 × ₹ 0.35 per cm2 = ₹ 162.66  

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Happy learning..