Question

A wall 10 m long, 20 cm thick and 1.2 m high has been constructed as a partition between two plots of land. Find the cost of cementing it on five
sides at the rate of 25 per sq. m.​

Answer 1

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SolutioN:

➠ In the given Cuboidal Wall ;

• l = 10m

• b = 1.2 m

• h = 20 cm = 0.2 m

➠ Area to be cemented

= Total surface area - area of bottom side

= 2(lb+bh+hl) - hl

= 2(10×1.2 + 1.2×0.2 + 0.2×10) - (0.2×10)

= 2(12+0.24+2) - 2

= 2(14.24) - 2

= 26.48 m sq.

➠ Cost of painting

= Area×Rate

= 26.48 × 25

= 662 Rs

Hence , done ! :)

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Answer 2

Step-by-step explanation:

Smooth muscle does not have striations because it is arranged differently than skeletal muscle. The arrangement does not produce dark bands in the cells, but the same motor proteins (actin and myosin) are used.