jawabannya ada di gambar
diketahui =
panjang (p) = (4 + √3) cm
lebar (l) = (4 - √3) cm
ditanya = a. keliling & b. luas
jawab =
a. keliling persegi panjang = 2 × (p + l)
= 2 × ((4 + √3) cm + (4 - √3) cm)
= 2 × (4 + √3 + 4 - √3) cm
= 2 × (4 + 4) cm
= 2 × 8 cm
= 16 cm
b. luas persegi panjang = p × l
= (4 + √3) cm × (4 - √3) cm
= 16 - 3
= 13 cm
Semoga membantu >0<
~Trex
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jawabannya ada di gambar
diketahui =
panjang (p) = (4 + √3) cm
lebar (l) = (4 - √3) cm
ditanya = a. keliling & b. luas
jawab =
a. keliling persegi panjang = 2 × (p + l)
= 2 × ((4 + √3) cm + (4 - √3) cm)
= 2 × (4 + √3 + 4 - √3) cm
= 2 × (4 + 4) cm
= 2 × 8 cm
= 16 cm
b. luas persegi panjang = p × l
= (4 + √3) cm × (4 - √3) cm
= 16 - 3
= 13 cm
Semoga membantu >0<
~Trex