A pyramid has a base in the shape of a rhombus and a peak directly above the base's center. The pyramid's height is #7 #, its base has sides of length #5 #, and its base has a corner with an angle of # pi/3 #. What is the pyramid's surface area?
1 Answer
Dec 3, 2017
T S A
Explanation:
AB = BC = CD = DA = a = 5
Height OE = h = 7
OF = a/2 = 5/2 = 2.5
Area of
Lateral surface area
diagonal
#OB = d_2/2 = BCsin (C/2)=5sin(pi/6)= 2.5
#OC = d_1/2 = BC cos (C/2) = 5* cos (pi/6) = 4.33
Area of base ABCD
T S A
T S A