A rectangular farm has to be fenced on one long side, one short side and the diagonal. If the cost of fencing is Rs. 100 per m, the area of the farm is 1200 m2 and the short side is 30 m long, how much would the job cost ?
A. Rs. 7000
B. Rs. 12000
C. Rs. 14000
D. Rs. 15000
Answer: Option B
Solution(By Examveda Team)
Length :$$\eqalign{ & = \left( {\frac{{1200}}{{30}}} \right)m \cr & = 40\,m \cr} $$
Diagonal :
$$\eqalign{ & = \left( {\sqrt {{{\left( {40} \right)}^2} + {{\left( {30} \right)}^2}} } \right)m \cr & = 50\,m \cr} $$
Length to be fenced :
$$\eqalign{ & = \left( {40 + 30 + 50} \right)m \cr & = 120\,m \cr} $$
∴ Cost of fencing :
$$\eqalign{ & = {\text{Rs}}{\text{.}}\left( {120 \times 100} \right) \cr & {\text{ = Rs}}.12000 \cr} $$
Related Questions on Area
A. 15360 m2
B. 153600 m2
C. 30720 m2
D. 307200 m2
E. None of these
A. 2%
B. 2.02%
C. 4%
D. 4.04%
E. None of these
A. 16 cm
B. 18 cm
C. 24 cm
D. Data inadequate
E. None of these
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
A. 40%
B. 42%
C. 44%
D. 46%
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