keliling .... a 76 cm c 96 cm b 84 cm d 151 cm

Keliling persegi panjang = 2 × ( p + l )
=2 × ( 30 +14 )
=2× 44
= 88
Keliling setengah lingkaran =
= 2× 1/2 × 22/7×7
= 22
Lb = 88 + 22= 110