Find the area of the shaded figure

Express result to the accuracy of 2 decimal.
Category: 
Correct Answers: 
30
Points: 
1

Calculate the number 6191

NUMBERMANIA: Calculate the number 6191 using numbers [9, 3, 4, 1, 58, 472] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10

Calculate the number 1345

NUMBERMANIA: Calculate the number 1345 using numbers [9, 5, 4, 7, 15, 408] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10

Calculate the number 735

NUMBERMANIA: Calculate the number 735 using numbers [4, 2, 9, 6, 66, 403] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10

Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Category: 
Correct Answers: 
9
Points: 
2
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