Question

Geometry tasks

 

A triangle has sides that measure 6cm, 8cm, and 10 cm. Find the exact volume of the solid of revolutions formed when the triangle is revolved about the side of length 8 cm. 

 

 

 

In a regular pentagonal pyramid, each base edge measures 7 cm, and the apothem of the base measures 4 cm. The altitude of the pyramid measures 12 cm.

Find a) lateral area L; b) total area T; c) volume V.

 

 

 

For a right circular cylinder, suppose that r = 6 in and H = 7 in.

Find the exact:

  1. a) L;
  2. b) T;
  3. c) V.

 

 

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