The area of a circle is 77.28m2.

Find the length of the diameter rounded to 1 DP.

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