tolong dikerjakan no 25 dan 26

25 ) Luas
= Luas 1/2 lingkaran + Luas persegi panjang + Luas segitiga
= ( 1/2 × π × r × r ) + ( p × l ) + ( 1/2 × a × t )
= ( 1/2 × 3,14 × 10 × 10 ) + ( 22 × 20 ) + ( 1/2 × 15 × 20 )
= 157 + 440 + 150
= 747 cm2

26 ) Luas
= 1/2 × π × r × r
= 1/2 × 22/7 × 7 × 7
= 77 cm2