How to learn tables 11 to 15
For 12 years old easyliy please tell guys ​

For eleven, it had the same two numbers. For twelve, it continues up by even numbers. For thirteen, it's the same as twelve but by odd numbers. For fourteen, it's a little difficult but they have a pattern for every five multiples of fourteen. For fifteen, the numbers add by five but also counting up.

Step-by-step explanation:

Examples for the table of eleven would be: 11 × 3 = 33 or 11 × 6 = 66.

Table twelve would be (as examples): 12 × 2 = 24 and 12 × 3 = 36.

Table thirteen have numbers/answers like: 13 × 7 = 91 and 13 × 8 = 104.

Table fourteen as examples: 14 × 3 = 42 or 14 × 4 = 56.

Table fifteen would be like: 15 × 6 = 90 and 15 × 7 = 105.

Step 1: Finding the area of the circle with radius 7 cm
Area of the circle A = Pir^2
On substituting the value of the radius, we get
Area of the circle A =Pi(7)^2
Area of the circle A =49Pi square centimetre

Step 2: Finding the area of the circle with radius 3 cm
Area of the circle a =Pir^2
On substituting the value of the radius, we get
Area of the circle a =Pi(3)^2
Area of the circle a =9Pi square centimetre

Step 3: Finding the area of the shaded region
Area of the shaded region =49Pi-9Pi=40Pi = 125.664 square centimetre.

Answer: The area of the shaded region is 125.664 square centimetre.