Question

51. If A ABC - A POR, find the missing quantities in the following table which are marked
by question sign (?):
AB
Sr. No.
CA
BC
PQ
RP
QR
(?)
10 cm
12 cm
(1)
(?)'
12 cm
15.6 cm
(?)
13 cm
15 cm
(?)
(2)
12 cm
11.2 cm​

Answer 1

A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. ... Some calderas form a lake as the bowl-shaped depression fills with water.