Question

9.
For the terms x+2, X-7, x+3, x-5, x+1 (x e N) if the
median of data is 13, then x=--
A) 12
B) 13
C) 10
D) 11
10.
Total surface area of a hemisphere of radius 8 cm is - 11
B) 192 cm?
t
A) 256 7 cm
C) 42 1 cm?
D) 120 cm?
11. A ABC - A POR, AB:PQ = 3:4, then area of A ABC ; area of
A PQR is -
B) 1:9
A) 16:9
D) None
C) 9:16​

Answer 1

Answer:

Step-by-step explanation:

9.Terms are: x+2, X-7, x+3, x-5, x+1

arranging in ascending order

x-7, x-5,x+1,x+2,x+3

mean is x+1=13

x=12 option(A)

10. Total surface area of a hemisphere

=3πr²

=3*22/7*8*8

=603.4 cm²

11.

ar (Δ ABC) /ar(Δ PQR)=(AB/PQ)²=

=(3/4)²=9/16=9:16 option(C)