IT HAS TO BE METERS CUBIC METERS OR SQUARE METERS A rectangu

IT HAS TO BE METERS, CUBIC METERS, OR SQUARE METERS

A rectangular yard has a length of Squareroot 165 meters and a width of Squareroot 65 meters. Choose the best estimate of its dimensions. Then estimate the perimeter. Choose the best estimate of the dimensions below. A. 13 meters by 9 meters B. 12 meters by 9 meters C. 13 meters by 8 meters D. 12 meters by 8 meters The perimeter of the yard is approximately

Solution

Since 165 =12.845(approximately),the best estimate ( on rounding off to the nearest whole number ) is 165 =13. Also since 65 = 8.062 (approximately), the best estimate ( on rounding off to the nearest whole number is65 = 8.Hence the best estimate of the dimension of the yard is 13 meter by 8 meter. The option C is correct.

Then, the perimeter of the yard is 2*length +2* width = 2*13 +2*8 = 26 +16 = 42 meters.(approximately)