Answer:
Area: 38.48u² Perimeter: 24.995u
Explanation:
This is a quarter of a circle. You can use the formula to find the area of a full circle and then divide it by 4 to find the area of a quarter circle.
The radius is 7. So..
A = πr²/4 = π × 7²/4
= π × 49/4
= 12.25π
≈ 38.48u²
You have to find the circumference of the full circle in order to find the perimeter of this shape. The circumference is πd.
To find the diameter of a circle you multiply the radius by 2.
7 × 2 = 14
P = π14
≈ 43.98
Then, you divide that number by 4 because the arc (the curved part) is a quarter of the circumference.
43. 98 ÷ 4 = 10.995 - This is the length of the arc.
Now you add all the measurements:
7 + 7 + 10.995 = 24.995u
I hope this helps! :)