Question

Find the Surface area of a diagram which consist of cube and semi sphere as follows
cube has edge 8cm and semi sphere having base of radius 7cm on the edge of the cube?
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Answer 1

Answer:

ANSWER:

It is given that, length (l) of box = 1.5 m

Breadth (b) of box = 1.25 m

Depth (h) of box = 0.65 m

(i) Box is to be open at top.

Area of sheet required

= 2lh + 2bh + lb

= [2 × 1.5 × 0.65 + 2 × 1.25 × 0.65 + 1.5 × 1.25] m2

= (1.95 + 1.625 + 1.875) m2 = 5.45 m2

(ii) Cost of sheet per m2 area = Rs 20

Cost of sheet of 5.45 m2 area = Rs (5.45 × 20)

= Rs 109

Answer 2

Step-by-step explanation:

the the surface area of cube is equals to 6 a² so so the area of the cube is equals to 6 ×8²

522

now area of a semi sphere is 2πr²+2πr=2×22/7×49+2×22/7+7cm²=44×7+93/7=321.28cm²

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