Question

In the marriage of Raj’s brother, a conical tent is made by stitching 12 triangular pieces of cloth of different coloured red and white alternatively , each piece measuring 20cm, 20cm, 10cm.




What is the area of total cloth required for making the conical tent ?



(using herons formula)​

Answer 1

Answer:

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Step-by-step explanation:

sides of triangle 10,20,20

half parimeter of triangle=50/2=25

now we can find the area of triangle by herons formula

area=25√15

since there's 12 triangle and two colours so we have 6 triangle of each colour

so area of red colour clothe =25√15×6 =150√15 ans

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