I have made a closed right circular cone whose length of the base radius is 15cm and slant height is 24cm. Let us calculate the cu

2 thoughts on “I have made a closed right circular cone whose length of the base radius is 15cm and slant height is 24cm. Let us calculate the cu”

1. Answer:

   Given :-

   • A closed right circular cone whose length of the base radius is 15 cm and slant height is 24 cm.

   To Find :-

   • What is the curved surface area and total surface area of the cone.

   Formula Used :-

   ➲ Curved Surface Area = πrl

   ➲ Total Surface Area = πr(l + r)

   where,

   • r = Radius
   • l = Slant height

   Solution :-

   First, we have to find the curved surface area of a cone,

   Given :

   • Radius = 15 cm
   • Slant height = 24 cm

   According to the question by using the formula we get,

   ↦ C.S.A of cone = 22/7 × 15 × 24

   ↦ C.S.A of cone = 22/7 × 360

   ➠ C.S.A of cone = 1131.43 sq.cm

   ∴ The curved surface area of a cone is 1131.43 sq.cm.

   Again, we have to find the total surface area of a cone,

   Given :

   • Radius = 15 cm
   • Slant height = 24 cm

   According to the question by using the formula we get,

   ↦ T.S.A of cone = 22/7 × 15(24 + 15)

   ↦ T.S.A of cone = 22/7 × 15(39)

   ↦ T.S.A of cone = 22/7 × 15 × 39

   ↦ T.S.A of cone = 22/7 × 585

   ➠ T.S.A of cone = 1838.57 sq.cm

   ∴ The total surface area of a cone is 1838.57 sq.cm.

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2. Answer:

   Step-by-step explanation:

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