A playground measures 36 m by 21 m. How many flagstaffs are needed along the boundary placed 3 m apart___________?
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Answer: B. 38
Explanation
The perimeter of any closed rectangular boundary is calculated by adding length and breadth then doubling. Dividing this total calculated perimeter by the specific flagstaff spacing distance determines the total count. Placing posts strictly along a closed loop boundary does not require adding any extra corner poles. Perimeter formulas state that distance around any flat rectangle equals two multiplied by sum of sides. Boundary division problems frequently appear in fencing applications and landscape architecture projects across mathematics. The playground dimensions provided are thirty-six meters for length and twenty-one meters for breadth respectively.
Urban planners use boundary calculations when installing perimeter security fences around public municipal parks safely. Landscape designers determine exact material quantities needed for decorative garden borders through similar geometric divisions. Calculating perimeter spacing ensures uniform distribution of decorative lighting fixtures along outdoor recreational areas. Option A represents thirty-seven flagstaffs which underestimates the calculated result due to rounding calculation errors. Option C represents thirty-nine flagstaffs which typically occurs if someone incorrectly adds extra corner allowance poles. Option D represents forty flagstaffs which overestimates the required count by miscalculating total perimeter length.
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- Mathematics
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- Mathematics
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