Question

can u give me answer for the 5 questions


please ​

Answer 1

Step-by-step explanation:

Correct answer

I).

= radius = 14/2 = 7cm²

So surface of area = 4πr² = 4×22/7×(7)cm²

= 4×22×7×7cm²

= 88×7cm²

= 616cm²

ii) here , the diameter = 21cm

= R = 21/2 cm

So , surface of area = 4πr²= 4×22/7×(21/2)²cm²

= 4×22/7×21/2cm²

= 22×3×21cm²

= 1386cm²

iii) here , the diameter = 3.5m

= R = 35/2m=35/20m

so, surface of area = 4πr² = 4×22/7×(35/20)²m²

= 4×22/7×35/20×35/20m²

= 11×35/10m²

= 385/10m²

= 38.5m²

Hope it's help you !

Mark as brainlisst