Question

Tolong bantu jawab pake cara makasih

Answer 1

Verified answer

12.
luas persegi = 25 x 20 = 500 cm²

luas lingkaran = luas persegipanjang - luas yg tanpa lingkaran
= 500 - 346
= 154 cm²

luas lingkaran = πr²
154 = 22/7 r²
154:22/7 = r²
r = √49
r = 7 cm