Tolong jawaban no.1 ,2,dan 5

1. L persegi = s × s
= 10 × 10
= 100cm2
L lingkaran = 314/100× r × r
= 314/100× 5 × 5
= 7850/100
= 78,5cm2
Lpesegi - Llingkaran = 100cm - 78,5cm2
= 21,5cm2

2. Ltrapesium = a+b÷2×t
= 28+40÷2×32
= 1088cm2
Llingkaran = 1/2 × 314/100 ×13 ×13
=5833/100
= 58,33
L trapesium-Llingkaran =1029,67cm2