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SashulF [63]
2 years ago
13

HELP HELP I NEED HELP​

Mathematics
2 answers:
Papessa [141]2 years ago
8 0

Answer:

<u>a. 1385.44 ft²</u>

Step-by-step explanation:

<u>Area of a circle</u>

  • πr²

<u>Given</u>

  • r = 21 ft

<u>Solving</u>

  • 22/7 x 21 x 21
  • 22 x 3 x 21
  • 66 x 21
  • 1386 ft²
  • Option A is the closest answer
zheka24 [161]2 years ago
7 0

\color{red}{ \tt{Given : }}

\textbf{ radius = 21 ft }

\color{red}{ \tt{Solution : }}

\textbf{Area of circle = πr²}

\bold{ =   \frac{22}{\cancel{7}}  × \cancel{21} × 21 }

\textbf{= 22 × 3 × 21 }

\textbf{= 1386 ft²}

{\boxed{{area \:  =  1386 ft²}}}

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