Question

find the diameter of a circle and it circumference if its area is (i) 6.16m²
please solve this in copy​

Answer 1

Answer:

the diameter of circle D =2.8 meter

circumference of circle =  8.8 meter

Step-by-step explanation:

given the area of circle = 6.16 m²

so we know form formula of area of circle = πR²

πR² = 6.16

(22/7)R²=6.16

R² = 6.16×(7/22)

R² = 1.96 m

R = 1.4 meter

now

the diameter of circle D = 2R = 2×1.4 = 2.8 meter

and

circumference of circle = 2πR = 2×(22/7)×1.4 = 8.8 meter

Answer 2

Answer:

We know,

Area of Circle=6.16m^2

therefore,πr^2=6.16

22/7×r^2=6.16

therefore,r=1.4m

diametere=2radius

d=2×1.4

d=2.8m

circumfrence=2πr

=2×22/7×1.4

=4.48m