b The area of an equilateral triangle with a side length of s is A_(â–ł)= s^2sqrt(3)4.
A
a
B
b 9sqrt(3) square centimeters
a We are asked to sketch a tetrahedral solid that models unique salt and pepper shakers. A tetrahedron is a a triangular pyramid. Since each edge of a shaker measures 3 centimeters, each face of the tetrahedron is an equilateral triangle.
b We are asked to find the total surface area of one shaker S. The shaker has 4 sides, each in the shape of an equilateral triangle with a side length of s= 3 centimeters. We will use the formula for the area of an equilateral triangle, P_(â–ł).
