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The surface area of a cone with radius r units and slant height s units is shown below:
Surface area = 3.14(rs + p2)
Part A: If r = 6 units and s = 4 units,

write an expression that can be used to calculate the surface area of the cone.

Part B: What is the surface area of the cone? Show your work.

PLEASE HELP WILL GIVE BRAINLIEST AND 5.0 STAR RATING

Respuesta :

sqdancefan

Answer:

  A. 3.14(6·4 +6²)

  B. 188.4 square units

Step-by-step explanation:

Use the given expression to calculate surface area by substituting the numbers for the corresponding variables.

A.

  3.14(rs +r²) . . . . for r = 6 and s = 4

  = 3.14(6·4 +6²)

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B.

Evaluating the above expression gives the surface area:

  = 3.14(24 +36) = 3.14(60) = 188.4 . . . square units

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