Saved Bookmarks
| 1. |
Find the circumference of a circle whose area is 1386 cm².(A) 42(B) 132 cm (C) 42 cm (D) 21 cmin2TheifheimIf it is doubled how many times will be |
Answer» Option B is correctarea is CIRCLE, πr²= 1386 r²= (1386 ×7)/22 r=√441 r= 21cm Circumference= 2πr =2×22/7×21 =2×22×3 =6×22 =132cm |
|