50. State and prove Pythagoras theorem.
51. If A ABC - A POR, find the missing quantities in the following table which are marked
by question sign (?):
+ 19x
AB
BC
Sr. No.
CA
PQ
QR
RP
4 cm
(?)
9 cm
2.4 cm
3.6 cm
(?)
5 cm
5 cm
(2)
lations
7 cm
(?)
(?)
11.2 cm
mean of the following frequency distribution is 43.75 :
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