A) \[1300\text{ }sq.\text{ }m.\]
B) \[1447\text{ }sq.\text{ }m.\]
C) \[1781\text{ }sq.\text{ }m.\]
D) \[1386\text{ }sq.\text{ }m.\]
Correct Answer: D
Solution :
(d): Outer dia \[=28+7=35\] Area \[=\pi ({{R}^{2}}-{{r}^{2}})=\frac{22}{7}\times \left( 35+28 \right)\left( 35-28 \right)\] \[=22\times 63=1386sqm.\]You need to login to perform this action.
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