tolong ya temen kakak plizzz tolong ya cuman 2 itu saja kok (makciiii...)

1. l1 = p×l
= 10 × 7
=70 cm2
l2 =1/2 || r2
= 1/2 ×22/7×7×7
=1/2 ×22 ×7
= 11×7
= 77 cm2
l = 70 cm2 + 77 cm2 = 147 cm2
2. k = 300 cm : 4 = 75 cm
l = 75 cm × 75 cm
=5.625 cm2 :2
= 2.812,5 cm2