Question

अर्धगोले के कितने faces हैं

(A) 1
(B) 2
(C) अनेक
(D) इनमें से कोई नहीं​

Answer 1

Answer:

1 straight side, 1 curved side, 2 vertices where the curved side and the straight side meet at the two ends of the straight side, 2 angles at the ends of the straight side and forming 90 deg with the tangents to the curved side.