Question

The ratio of the radius and height of a cone is 7:18. Its volume is 924 cm. Its radius and height is​

Answer 1

Answer:

❤Let radius = 5x, height = 12x

Let radius = 5x, height = 12xAccording to the question,

Let radius = 5x, height = 12xAccording to the question,13×227×(5x)2×12x=22007

Let radius = 5x, height = 12xAccording to the question,13×227×(5x)2×12x=22007=> x=1

Let radius = 5x, height = 12xAccording to the question,13×227×(5x)2×12x=22007=> x=1Therefore, r = 5, h = 12

Let radius = 5x, height = 12xAccording to the question,13×227×(5x)2×12x=22007=> x=1Therefore, r = 5, h = 12Slant height (l) = √r2+h2=√25+144

Let radius = 5x, height = 12xAccording to the question,13×227×(5x)2×12x=22007=> x=1Therefore, r = 5, h = 12Slant height (l) = √r2+h2=√25+144= √169 = 13 cm

Let radius = 5x, height = 12xAccording to the question,13×227×(5x)2×12x=22007=> x=1Therefore, r = 5, h = 12Slant height (l) = √r2+h2=√25+144= √169 = 13 cmPart of solved Volume and surface area questions and answers :❤

Answer 2

Answer:

The ratio of the radius and height of a cone is 5 : 12. Its volume is 31427cm3. Its slant height is

A) 18 cm

B) 13 cm

C) 16 cm

D) 15 cm

Correct Answer:

B) 13 cm

Description for Correct answer:

Let radius = 5x, height = 12x

According to the question,

13×227×(5x)2×12x=22007

=> x=1

Therefore, r = 5, h = 12

Slant height (l) = r2+h2−−−−−−√=25+144−−−−−−−√

= 169−−−√ = 13 cm