Answer:
30
Step-by-step explanation:



<em>hope</em><em> </em><em>it</em><em> </em><em>was</em><em> </em><em>helpful</em><em>.</em><em> </em><em>any</em><em> </em><em>confusion</em><em> </em><em>u</em><em> </em><em>may</em><em> </em><em>ask</em>
3a =18
3a/3 = 18/3
a = 18/3
a = 6
Hope this helps
To find the sum of an infinite geometric series having ratios with an absolute value less than one, use the formula, S=a11−r, where a1 is the first term and r is the common ratio.
2nd one, take area of whole 12 x 4=48, if area is equally divided, divide area by 2 or multiply by 1/2