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3 years ago

The area of a circle is 77.28m2. Find the length of the diameter rounded to 1 DP.

Mathematics

1 answer:

allochka39001 [22]3 years ago

4 0

Answer:diameter=9.92m

Step-by-step explanation:

Area=77.28

π=3.14

Area=π x (d/2)^2

77.28=3.14 x (d/2)^2

Divide both sides by 3.14

77.28/3.14=(3.14x(d/2)^2)/3.14

24.6=(d/2)^2

Take them square root of both sides we get

d/2=√(24.6)

d/2=4.96

d=4.96 x 2

d=9.92

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Read 2 more answers

What is the center of the hyperbola whose equation is (y+3)^2/81-(x-6)^2/89=1?

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