Question

What is diameter of circle with area 7850

Answer 1

since the area of the circle is  πr²

according to question,

πr²=7850

3.14×r²=7850

r²=7850/3.14

r²=2500

r=50

since diameter is twice of radius so,

d=2r

d=2×50

d=100

so diameter is 100 { whatever unit in which it measured}

Answer 2

Answer:100

Step-by-step explanation:Pi x r x r=7850

r x r= 7850/3.14(Pi)

r x r = 2500

r = 50(Squared)

2r = d

50 x 2 = 100