Question

$\huge\underline\bold\purple{question}$
The height and the slant height of a cone are 21 cm and 28 cm respectively. Find the volume of the cone.


koi hai???​

Answer 1

Answer:

have ,

Height of cone h = 21 cm

Slant height l = 28 cm

Radius of cone = √(l2-h2) = √( 282 – 212) = √343 = 7√7 cm

Volume of cone = 1/3×22/7×7√7×7√7×21

= 2401π cm3

yes i have here .

.

your ans ok.

it's Niharika here

Answer 2

• Radius = √(28)² - (21)² = √784 - 441 = √343 cm

• Volume of Cone = ⅓(π)r²h

Volume of cone = ⅓ (π) (√343)² (21) = ⅓× 22/7 × 343 × 21

= 22/7 × 343 × 7 = 343 × 7 = 2401 cm³

• Volume of Cone = 2401cm³