Question

Calculate the angels marked with letters. O is the centre of the circle.​

Answer 1

In Rhombus the diagonals bisects the angles

and adjacent angle sum up to give 180

∠p+∠Q=180

34+x=90

x=90−34=56

In Rhombus opposite angle are equal

∠Q=angleS

x=y=56

Answer 2

Step-by-step explanation:

1) Compounded Annually :

P=Rs.80000

R=10% p.a.

T=121 years ⟹n=1+21

Amount for 1st year.

A=P[1+100R]n

     =Rs.80000[1+10010]=Rs.88000

SI on Rs. 88000 for next 1/2 year 

=Rs.88000×10010×21=Rs.4400

Therefore, Amount = Rs.88000+Rs.4400 = 92400Rs.

2) Compounded half yearly :

P=Rs.80000

R=10% p.a.=5% per half year

T=121 years ⟹n=3

A=Rs.80000[1+1005]3

A=Rs.92610

Thus, the difference between the two amounts = Rs.92610−Rs.92400 =Rs.210