Question

Luas bangun gabungan adalah
A.397 cm²
B.398 cm²
C.399 cm²
D.400 cm²

Answer 1

Verified answer

Luas 1/2 O = 1/2 x 3,14 x 10 x 10 = 157 cm2
luas trapesium = 1/2 x (28+20) x 10 = 240 cm2
luas bangun diatas = 157 + 240 = 397 cm2


good luck.. ;-)

Answer 2

Luas 1 : 1/2 ×phi × r 2 : 1/2 × 3, 14 × 10× 10 = 1/2 × ( 3,14 + 20 ) = 157 luas 2 = 1/2 × ( 28 + 20 ) ×10 = 48×10= 480 ÷2= 240 luas gabungan = 157 + 240 = A. 397 SEMOGA BERMANFAAT YA ..