Johnson Solids (Page 2)

(box: x-ray)  (F: faces)  (slider: perspective)  (image: L=rotate R=zoom)  (M: metrics)

(J25) Gyroelongated Pentagonal Rotunda
Vertices:  30  ({5 * 4}[4] + 10[5])
Faces:37  ({10 + 5 * 4} equilateral triangles
    + {5 + 1} regular pentagons + 1 regular decagon)
Edges:65
Symmetry:  5-fold Pyramidal  (C5v)
(values below based on edge length = 1)
Volume:(45+17*sqrt(5)+10*sqrt(2    
    *(sqrt(10*(65+29*sqrt(5)))    
    −1−sqrt(5))))/12    
≈13.667050843671696932