plz solve this question :
Of chp 13 (Q-4) plz
=> 6(7)²+22/7 × 7/2 ×7/2
=> 294 + 38.5 = 332.5 cm²
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Answer:
The greatest diameter=side of the cube=7cm.
The radius of the hemisphere =3.5cm.
Now,
The Surface Area of Solid=Surface Area of Cube - Surface Area of Base Hemisphere + Curve Surface Area of Hemisphere
Surface Area of Cube
=6×side 2
=6×7×7
=294sq cm
Surface Area of Base of Hemisphere is,
=πr 2
= 722 ×3.5 2 =38.5cm 2
Curved Surface Area of Hemisphere is,
=2×38.5
=77sq cm
∴ total Surface Area is =294−38.5+77
=332.5sq cm.
Step-by-step explanation:
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