We have diameter=18 inches
so diameter= 2* radius
radius=18/2= 9
r=9
Area of a circle =
![\pi \times r^{2}](https://tex.z-dn.net/?f=%5Cpi%20%5Ctimes%20r%5E%7B2%7D%20)
so Area=
![\pi \times {9}^{2} \\ 81 \times \pi \\](https://tex.z-dn.net/?f=%5Cpi%20%5Ctimes%20%7B9%7D%5E%7B2%7D%20%5C%5C%2081%20%5Ctimes%20%5Cpi%20%5C%5C%20)
Since we take pi as 3.14 we get area as= 81*3.14
Area= 254.34
rounding up to the nearest tenth
![ans = 254.3 \: in^{2}](https://tex.z-dn.net/?f=ans%20%3D%20254.3%20%5C%3A%20in%5E%7B2%7D%20)
Second answer
Answer:
72
Step-by-step explanation:divide 36 by 9 and find the ration is 4. Apply same ratio to the width and the result is 8; 32/4=8. Area of rectangle is length times width; 9x8=72 sq inches
<span>C.25 cm² is the answer
</span>
Answer:
9x² + 28x - 32
Step-by-step explanation:
Given
(9x - 8)(x + 4)
Each term in the second factor is multiplied by each term in the first factor, that is
9x(x + 4) - 8(x + 4) ← distribute both parenthesis
= 9x² + 36x - 8x - 32 ← collect like terms
= 9x² + 28x - 32
Answer:
253 feet
Explanation:
Subtract 125ft. from 378ft.