Question

How many lead shots each 4.2 cm in diameter can be obtained from a rectangular solid lead with dimensions 66 cm 42 cm and 21 cm?

Answer 1

For sphereR = 4.2/2 = 2.1 cmLet the no. of spheres be x
For cuboidl = 66 cmb = 42 cmh = 21 cm
A/Q Volume of cuboid = volume of spheres x nlxbxh = 4/3 πR³ x n66x42x21 = 4x22x2.1x2.1x2.1x n / 3x7n = 66x42x21x3x7 / 4x22x2.1x2.1x2.1n = 1500 spheres Ans.
Read more on Brainly.in - https://brainly.in/question/1033216#readmore

Answer 2

Let number of headshots be x.

Volume of lead in the rectangular solid =(66×42×21)cm3 

Radius of a lead shot = 4.2/2 cm = 2.1 cm

Volume of a spherical lead shot = 4π×(2.1)3cm3

Volume of x spherical lead shots =

= [(4/3) × (22/7) × (2.1)^3 × x )] cm^3

Volume of x spherical shots = Volume of lead in rectangular solid

(4/3 × 22/7 × (2.1)^3 × x ) = 66 × 42 × 21

⇒ x = 66 × 42 × 21 × 3 × 7/4 × 22 × (2.1)^3

⇒x = 1500

∴ Number of lead shots=1500

Explanation:

• Here us your answer.......

• hope this answer helps for you.......

• If my answer is helpful to you....

Please mark me as brilliant...