Question

the radius of a sphere is 3.5 cm. find the cost of plating gold at the rate of ₹ 150 per cm²​

Answer 1

Step-by-step explanation:

Radius - 3.5 cm

so,

TSA - 4πr²

So.

=> 4πr²

=> 4 × 22/7 × 3.5 × 3.5

After Solving

°> 154 cm²

And

If, °> 1cm² = 150

So 154 cm² = 154 × 150

°> 23100 rs.

Answer 2

Answer:

rs 150 ×7 = rs 1050

Step-by-step explanation:

rs 150cm × 3.5 =52.50