Question

give answers.......... ​

Answer 1

Answer: 528 m

Step-by-step explanation: area of circle would be 2×22÷7×11×11-10×10

=2×22÷7×21

=44×3

=132

As man takes 4 rounds, 132×4=528

Answer 2

Answer:

1 )20√3

2)20√3(√3-1)

Step-by-step explanation

d is point 60m away

bc is hieght of tower

ab is depth of tank

1) tan30=bc\cd

1\√3=bc\60

60\√3=bc

20√3

2) tan45=ac/cd

1=ac/60

ac=60

ab=ac-bc

ab=60-20√3

ab=20√3(√3-1)