Question

please answer the question fast​

Answer 1

Step-by-step explanation:

1. Area of square = a²= 20²= 400cm²

Area of circle = 22/7 x R² = 22/7x (10²) = 314.29 cm²

Area of shaded region = Area of square- area of circle

= 400-314.29 = 85.71cm²

2. By pythagoras theorem

H²=O²+A²

Ac²= ad²+dc²=6²+8² =100

Ac =√100 =10 cm

Now

Area of rectangle= lxb = 6x8 = 48 cm²

Area of circle = 22/7 x R² = 22/7 x 5² = 78.57 cm²

Area of shaded region = Area of circle- area of rectangle

= 78.57-48 =30.57 cm²

Answer 2

Answer:

1. 86 sq cm

2. 10cm

Step-by-step explanation:

1.

area of square=20*20=400 sq cm

diameter of circle=20 cm

so radius =10 cm

area of circle=3.14*100=314 sq cm

so shaded region area =400-314=86 sq cm

2.

since 3,4 and 5 are pythagoras triplet

so 6, 8 and 10 are also pythagoras triplet.

10 cm is answer