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3 years ago

What is the area of a sector with a central angle of 3π5 radians and a diameter of 21.2 cm?

Mathematics

2 answers:

agasfer [191]3 years ago

6 0

Answer: 105.84 I just took the test!

Step-by-step explanation:

umka2103 [35]3 years ago

4 0

We know that

Area of a circumference=π*r²
for diameter=21.2 cm---------> r=10.6 cm
A=π*10.6²--------> A=π*112.36 -------> A=352.81 cm²

if 2π radians (full circumference) has an area of -----------------> 352.81 cm²
<span>3π/5 radians-------------------------------------> X
X=[(</span>3π/5)*(352.81)]/2π---------> X=105.84 cm²

the answer is 105.84 cm²

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7 0

4 years ago

What is the area of the figure?

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