Bantuan dong:)pakai cara jangan ngasal​

Jawaban:

a) 20 cm

b) 2.400 cm²

c) 6.000 cm³

Penjelasan dengan langkah-langkah:

No. a

= √25² – (30 ÷ 2)²

= √25² – 15²

= √625 – 225

= √400

= 20 cm ✔

No. b

= Luas alas + Jumlah luas sisi tegak

= (30 × 30) + (4 × 1/2 × 30 × 25)

= 900 + (2 × 30 × 25)

= 900 + (60 × 25)

= 900 + 1.500

= 2.400 cm² ✔

No. c

= 1/3 × Luas alas × Tinggi

= 1/3 × (30 × 30) × 20

= 1/3 × 900 × 20

= 300 × 20

= 6.000 cm³ ✔

Keterangan :

Semoga membantu.

Have a nice day 🙂

Penjelasan dengan langkah-langkah:

a. Tinggi Limas = √(25)²-(15)² = √625-225=√400=20cm

b.Luas permukaan = 4×luas segitiga + luas alas

=1/2×a×t = (1/2×30×25)+900=1275cm

c.Volume = 1/3×luas alas×tinggi = 1/3×900×20=6000