Question

Answer this maths question with explanation ​

Answer 1

Answer:

Step by step is shown in image hope it will help you...

Answer 2

Given : r = 5cm

To find : area of shaded region

Construction :

join center of outer 8 circles to form a square {as shown in attachment }

Solution : refer to attachment

Instructions:

• area of 1 = area of 3 = area of 7 = area of 9 = $\frac{1}{4} \times \pi {r}^{2}$

• area of 2 = area of 4 = area of 6 = area of 8 = $\frac{1}{2} \times \pi {r}^{2}$

• area of 5 = πr²

this is because ,

• part of 1 , 3, 7 , 9 in square is (1/4) of a circle
• part of 2 , 4 , 6 , 8 in square is semicircle
• and 5th is whole circle

Answer :

option A) (400 - 100π ) cm²