bantuin thanksssssss
Jawaban:
1. L kaca = 25 meja x πr²
L kaca = 25 x 22/7 x 105 cm x 105 cm
= 866.250 cm²
= 86,625 m²
2. a. bnyak tanaman = kell taman / jarak tanaman
11 = kell taman / 4
kell taman = 11 x 4
kell taman = 44 m
b. Kell taman = πd
44 m = 22/7 x d
d = (44 x 7) / 22
d = 14 m
c. L taman = πr²
L taman = 22/7 x 7 m x 7 m
= 154 m²
3. d = 60 cm
L meja = πr²
L meja = 3,14 x (30 cm)²
= 2.826 cm²
L taplak = 45 cm x 45 cm
= 2.025 cm²
L meja yg tdk tertutup taplak
= 2.826 cm² - 2.025 cm²
= 801 cm²
