Question

solve the problems please​

Answer 1

Applying Pythagors' theorem,

slant height, l² = r² +h²

⇒ l² = 3² +4²

⇒l² =25

⇒slant height = 5 m

now, curved surface area = π× r×l

                                         = 3.14×3×5

                                         = 47.1 m²

now, 10% extra material is required for stitching and wastage = 0.1 ×47.1 = 4.71 m²

total area = 47.1 +4.71

               =51.81 m²

now, L×B = 51.81

⇒Length ,L = 51.81/4.5

                  = 11.51 m

Answer 2

Answer:

just use following formulae

1.volume of cone = 1/3 ×22/7 × r×r ×h

2. GET CUT OF THE 10 %

U CAN DO IT.....