Question

Areas of some circles are given below find their diameters.
(1) 176 sq em
(2) 394.24 sq cm (3) 12474 sq cm
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Answer 1

Answer:

1) pi (176/2)^2

2) pi (394.24/2)^2

3) pi (12474/2)^2

Answer 2

Step-by-step explanation:

1)176sq c m

area =πr²

=>176=22 /7 ×r²

r²=176×7/22 =56

r=√56

d=2r=2√56

2) 394.24sqcm

area=πr²

394.24=22/7×r²

r²=394.24×7/22=125.44

r=11.2

d=2r=2×11.2

=22.4cm

3)12474sq cm

A=πr²

12474=22/7÷r²

=3963

r=√3963 =63

d=2r = 2×63 = 126cm

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