Penjelasan dengan langkah-langkah:
1)
r = √(s² - t²)
r = √(41² - 40²)
r = √(1.681 - 1.600)
r = √81
r = 9 Cm
2) r = 7 Cm || t = 24 Cm || s = √(7²+24²) = 25 Cm
Luas selimut :
= π × r × s
= 22/7 × 7 × 25
= 22 × 25
= 550 Cm²
3) r = 9 Cm || t = 12 Cm || s = √(9² + 12²) = 15 Cm
= π × 9 × 15
= 135π Cm²
4) s = 26 Cm || t = 24 Cm || r = √(26²-24²) = 10 Cm
Luas alas :
= π × r × r
= 3,14 × 10 × 10
= 314 Cm²
5)
Jari jari :
L = π·r²
64π = π·r²
64 = r²
r = 8 Cm
Garis pelukis :
Ls = π·r·s
136π = π·8·s
136 = 8s
s = 17 Cm
Tinggi Kerucut :
t = √(s² - r²)
t = √(17² - 8²)
t = √(289 - 64)
t = √225
t = 15 Cm
Jawaban:
r² = 41² - 40²
r² = 81
r = ²√81
r = ²√9²
r = 9 cm
--------------------
π × r × s
22/7 × 7 × (√7² + 24²)
22/7 × 7 × 25
22 × 25
550 cm²
==================
π × r × (√9² + 12²)
π × 9 × 15
(9 × 15)π
135π cm²
________________
π × r²
3,14 × 10²
3,14 × 100
314 cm²
———————————
√s² - r²
√(136/8)² - (√64)²
√17² - 8²
√225
15 cm
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Penjelasan dengan langkah-langkah:
1)
r = √(s² - t²)
r = √(41² - 40²)
r = √(1.681 - 1.600)
r = √81
r = 9 Cm
2) r = 7 Cm || t = 24 Cm || s = √(7²+24²) = 25 Cm
Luas selimut :
= π × r × s
= 22/7 × 7 × 25
= 22 × 25
= 550 Cm²
3) r = 9 Cm || t = 12 Cm || s = √(9² + 12²) = 15 Cm
Luas selimut :
= π × r × s
= π × 9 × 15
= 135π Cm²
4) s = 26 Cm || t = 24 Cm || r = √(26²-24²) = 10 Cm
Luas alas :
= π × r × r
= 3,14 × 10 × 10
= 314 Cm²
5)
Jari jari :
L = π·r²
64π = π·r²
64 = r²
r = 8 Cm
Garis pelukis :
Ls = π·r·s
136π = π·8·s
136 = 8s
s = 17 Cm
Tinggi Kerucut :
t = √(s² - r²)
t = √(17² - 8²)
t = √(289 - 64)
t = √225
t = 15 Cm
Jawaban:
r² = 41² - 40²
r² = 81
r = ²√81
r = ²√9²
r = 9 cm
--------------------
π × r × s
22/7 × 7 × (√7² + 24²)
22/7 × 7 × 25
22 × 25
550 cm²
==================
π × r × (√9² + 12²)
π × 9 × 15
(9 × 15)π
135π cm²
________________
π × r²
3,14 × 10²
3,14 × 100
314 cm²
———————————
√s² - r²
√(136/8)² - (√64)²
√17² - 8²
√225
15 cm