Question

please anybody solve this problem I am 10th standard please please ​

Answer 1

Answer:

Given

height of cylinder = 90 cm

height of hemisphere sphere = radius = 7 cm

so radius of cylinder also = 7 cm

CSA of a cylinder

= 2πrh

= 2×22/7×7×90

= 44×90

= 3960 cm²

both the hemispheres together form a complete hemisphere

so TSA of sphere

= 4 πr²

= 4×22/7×7²

= 88×7

= 616 cm²

so total are of the object = 3960+616= 4576 cm²

Volume of cylinder

= πr²h

= 22/7×7²×90

= 22×7×90= 13860 cm³

volume of 2 hemisphere = volume of sphere

= 4/3πr³

= 4/3×22/7 × 7³

=1437.33 cm³

total volume of figure

= 13860+1437.33

= 15297.33

Step-by-step explanation:

Mark as brainliest ✌️

and follow me