Radius of a cone is 30cm and height 40cm.
A)
What is the base perimeter of the cone?
B)
What is the curved surface area of the cone?
Answers
Answer:
a) Base perimeter = 2πr
= 2×π×30
= 60×π
= 60×3.14
= 188.40 cm²
b) CSA of the Cone = πrl
= π×30×40
= 1200π cm²
Much property = 1200×π
=1200×3.14 = 3768.00 cm²
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Answer:
a) The cone's base is 188.40 cm2 in circumference.
b) The cone's curved surface area is 3768.00 cm2.
Step-by-step explanation:
Step : 1 Base Area of a Cone = (πD2)/4 square units
Here “D” represents the base diameter of a cone
a) Base perimeter = 2πr
= 2×π×30
= 60×π
= 60×3.14
= 188.40 cm²
Step : 2 b) CSA of the Cone = πrl
= π×30×40
= 1200π cm²
Much property = 1200×π
=1200×3.14 = 3768.00 cm²
Step : 3 Keep in mind the volume and radius.
Add the following to the volume formula for the cone's height: h = 3 V/r, where V is the volume of the cone, r is its radius, and h is the resulting height ( r2)
All there is to it is that!
Step : 4 The cone height formula is used to calculate the cone's height. The formulas h = 3V/r2 and h = l2 - r2 may be used to determine the cone's height, where V stands for the volume of the cone, r for its radius, and l for its slant height. The square of the lateral height is used to calculate the radius.
Size squared
Lateral height squared is deducted from height squared.
The result of step three has to be squared off.
The result is the radius of the cone.
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