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Find the total surface area of a solid cone of base radius 8cm and vertical height 6cm. (use the value 3.14 for π and give answers to the nearest cm2.​

User Rex Morgan
by
7.3k points

2 Answers

1 vote

Answer:

352cm²

Explanation:

formula = πr² + πLr

L = 6cm

r = 8cm

π = 3.14

3.14 × (8²) + 3.14 × 6 × 8

200.96 + 150.72

= 351.68

to the nearest cm² = 352cm²

User JohnTube
by
7.1k points
2 votes

Answer:

351.68 cm^2

Explanation:

Radius= 8cm

Vertical length (l)=6cm

therefore, Total surface area of a solid cone

=
\pi r^(2) +\pi rl


\pi r( r+l)\\3.14 *8(8+6)\\25.12(14)\\351.68

Total Surface Area of the solid cone= 351.68 cm^2

User Schnouki
by
6.9k points