Question

From an aluminum sheet 2mm thick a hemispherical sheet is made whose diameter is 14 cm. The amount of metal in it is ?​

Answer 1

Answer:

15.4 cm²

Step-by-step explanation:

area  of hemisphere=πr²/2

                                 = 22/7×7²/2

                                 = 11×7

                                 = 77 cm²

area of al sheet=77×0·2=15.4 cm²