Find the area of the shaded figure

Express result to the accuracy of 3 decimal.
Category: 
Correct Answers: 
39
Points: 
1

Calculate the number 5662

NUMBERMANIA: Calculate the number 5662 using numbers [1, 7, 3, 6, 90, 540] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
1
Points: 
10

Calculate the number 1038

NUMBERMANIA: Calculate the number 1038 using numbers [5, 4, 7, 6, 58, 813] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10

Find a missing number

Category: 
Correct Answers: 
5
Points: 
6
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