Question

1)
area =
2)
16 in
area =
3)
5 yd
area =
4)
8 yd
area =
5)
10 ft
area =
6)
7 in
area =
7)
3 ft
area =
8)
11 m
area =
9)
6 yd
area =

Explanation:

Step1: Recall area formula

The area of a circle is $A = \pi r^2$, where $\pi=3.14$, $r$ = radius.

Step2: Solve for Circle 1

Substitute $r=13$ ft:
$A = 3.14 \times 13^2 = 3.14 \times 169 = 530.66$

Step3: Solve for Circle 2

Substitute $r=16$ in:
$A = 3.14 \times 16^2 = 3.14 \times 256 = 803.84$

Step4: Solve for Circle 3

Substitute $r=5$ yd:
$A = 3.14 \times 5^2 = 3.14 \times 25 = 78.5$

Step5: Solve for Circle 4

Substitute $r=8$ m:
$A = 3.14 \times 8^2 = 3.14 \times 64 = 200.96$

Step6: Solve for Circle 5

Substitute $r=5$ ft (half of 10 ft):
$A = 3.14 \times 5^2 = 3.14 \times 25 = 78.5$

Step7: Solve for Circle 6

Substitute $r=3.5$ in (half of 7 in):
$A = 3.14 \times 3.5^2 = 3.14 \times 12.25 = 38.465$

Step8: Solve for Circle 7

Substitute $r=3$ ft:
$A = 3.14 \times 3^2 = 3.14 \times 9 = 28.26$

Step9: Solve for Circle 8

Substitute $r=11$ m (half of 22 m):
$A = 3.14 \times 11^2 = 3.14 \times 121 = 379.94$

Step10: Solve for Circle 9

Substitute $r=6$ yd:
$A = 3.14 \times 6^2 = 3.14 \times 36 = 113.04$

Answer:

1. $530.66$ sq. ft
2. $803.84$ sq. in
3. $78.5$ sq. yd
4. $200.96$ sq. m
5. $78.5$ sq. ft
6. $38.465$ sq. in
7. $28.26$ sq. ft
8. $379.94$ sq. m
9. $113.04$ sq. yd