Скачать или смотреть Class 9 Maths NCERT Chap 13 | Surface Area and Volume : 11 | Exercise 13.3 Q.5 to Q.8 NCERT Class 9

Surface Area and Volume Class 9 Maths Chapter 13 | Class 9 Maths Chapter 13 : Surface Area and Volume

EXERCISE 13.3
5. What length of tarpaulin 3 m wide will be required to make conical tent of height 8 m and base radius 6 m? Assume that the extra length of material that will be required for stitching margins and wastage in cutting is approximately 20 cm (Use π = 3.14).
6. The slant height and base diameter of a conical tomb are 25 m and 14 m respectively.
Find the cost of white-washing its curved surface at the rate of Rs 210 per 100 m^2.
7. A joker’s cap is in the form of a right circular cone of base radius 7 cm and height 24 cm. Find the area of the sheet required to make 10 such caps.
8. A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is
Rs. 12 per m^2, what will be the cost of painting all these cones? (Use π = 3.14 and take
√1.04 = 1.02)

SURFACE AREA AND VOLUME CLASS 9 MATHS CHAPTER 13 NCERT SOLUTION

Ex 13.3 q5 class 9 maths ncert chapter 13
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Topic :- Class 9 Maths NCERT Chap 13 | Surface Area and Volume : 11 | Exercise 13.3 Q.5 to Q.8 NCERT Class 9

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