tolong saya lagi yh temen hitunglah luas permukaan kerucut dengan 1).R:14 dan t:10 2).R:21 dan t:5

1)Luas permukaan kerucut
=πr²+πrt
=22/7.14.14+22/7.14.10
=616+440
=1056
2)Luas permukaan kerucut
=πr²+πrt
=22/7.21.21+22/7.21.5
=1386+330
=1716
Semoga membantu^_^

Rumus kerucut :

[tex] \frac{1}{3} \times \pi \times r \times r \times t[/tex]

1.
[tex] \frac{1}{3} \times \frac{22}{7} \times 14 \times 14 \times 10 \\ \\ = \frac{1}{3} \times 22 \times 2 \times 14 \times 10 \\ \\ = \frac{1}{3} \times 6160 = 2053.33[/tex]

2. 1/3 × π × r × r × t
= 1/3 × 22/7 × 21 × 21 × 5
= 1/3 × 22 × 3 × 21 × 5
= 1/3 × 6930
= 2310

#semogamembantu
#maafjikasalah