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3 years ago

What is the surface area of sphere with radius 13 ft?

Mathematics

2 answers:

melisa1 [442]3 years ago

7 0

Answer:

Surface area of a sphere= $676\pi ft^2$

Step-by-step explanation:

the surface area of sphere with radius 13 ft

Surface area of a sphere formula is $4\pi r^2$

Where 'r' is the radius of the sphere

r= 13 ft

plug in the radius and find surface area

Surface area of a sphere = $4\pi (13)^2$

= $4\pi *13*13$

= $676\pi$ square feet

9966 [12]3 years ago

6 0

SA=4pir^2
SA=4pi13^2
SA=4pi169
SA=676pi ft^2

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Read 2 more answers

What are the first nine multiples of 5, and 3?

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$\begin{gathered} 5\cdot1=5 \\ 5\cdot2=10 \\ 5\cdot3=15 \\ 5\cdot4=20 \\ 5\cdot5=25 \\ 5\cdot6=30 \\ 5\cdot7=35 \\ 5\cdot8=40 \\ 5\cdot9=45 \end{gathered}$

First 9 multiples of 3:

$\begin{gathered} 3\cdot1=3 \\ 3\cdot2=6 \\ 3\cdot3=9 \\ 3\cdot4=12 \\ 3\cdot5=15 \\ 3\cdot6=18 \\ 3\cdot7=21 \\ 3\cdot8=24 \\ 3\cdot9=27 \end{gathered}$

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1 year ago