I don't how how to do this someone please help!​

Answer to question 8 is : Area =1017.88 and Circumference =113.1

Answer to question 9 is: Area =490.87 and Circumference =78.54

Step-by-step explanation:

8. i just did  πr2for area and for circumference i did 2πr which is just the equation to find each

9.i found that half of the diameter is 12.5 so i did πr2 to find the Area i filled in the radius and pai and 2πr for circumference filled in the pai and radius

oh also round it if u want

plz give me brainliest and rate it that u and goodluck

its electric no smoke

step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐