tolong bantu yaa ^besok dikumpulin^

Please, let me answer your question :)

PQ=RS > P= 26 cm
QR=PS > L= 18 cm
TU=d > d= 14 cm > r= 7 cm
Ditanya= L?

LPP= p x l
LPP= 26 x 18
LPP= 468 cm²

LL= ½ x 22/7 x 7 x 7
LL= ½ x 22 x 7
LL= 11 x 7
LL= 77 cm²

L arsir= 468-77 = 391 cm²

Yg D jawabannya.

___________________________

r= 7 cm
Ditanya= L (arsir)?

L= 3/4 x 22/7 x 7 x 7
L= 3/4 x 22 x 7
L= 3/4 x 154
L= 115,5 cm²

Yg B jawabannya.

Hopefully this is the best for you :)

25. Luas persegi panjang - luas setengah lingkaran
= 26 cm x 18 cm - 1/2 x 22/7 x 7 cm x 7cm
= 468 cm² - 1/1 x 11/1 x 1 x 7 cm
= 468 cm² - 77 cm²
= 391 cm²

26. Luas 3/4 lingkaran
= 3/4 x 22/7 x 7 cm x 7 cm
= 3/2 x 11/1 x 1 x 7 cm
= 231/2
= 115,5 cm²