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Liono4ka [1.6K]
2 years ago
11

The surface area of a cone with radius r units and slant height s units is shown below:

Mathematics
1 answer:
Diano4ka-milaya [45]2 years ago
7 0

Step-by-step explanation:

part A:

Area_{_{surface}}=3.14*(3*5+3^2);

part B:

Area_{_{surface}}=3.14*(15+9)=3.14*24=75.36[units^2].

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