101,580 views
4 votes
4 votes
Please answer thisss

Please answer thisss-example-1
User Mahtar
by
2.7k points

2 Answers

15 votes
15 votes
If the shaded region is the circle (which it is),

The area of it is 78.5cm²

You can find the area of a circle by using the formula: pi • radius squared

In this case, the question states to use 3.14 for pi so our equation would look like:

3.14 • 5 • 5 (5 squared is same as 5 times5)

And that is how you get 78.5cm²
User Ankit Goyal
by
2.9k points
16 votes
16 votes

Find the area of the square

Find the area of the circle

Subtract the area of the circle from the area of the square.


area of square = 10 x 10 = 100 sq. Cm

Area of circle = pi x r ^2 = 3.14 x 5^2 = 78.5 sq. Cm


area of shard region = 100 - 78.5 = 21.5 cm^2

User Yohanny
by
3.2k points