1. area of a triangle having autitude=7 cm and bass= 4 cm is : ??? 2. supplimentry angle of 84: ?? 3. a boy is asked to run 12 times around a rectangular field measuring 35m by25m find the total distance boy ran. Thanks
1. Area = 1/2 base * height
2. 180 - 84 = ?
3. 12 * (2 * length + 2 * width) = ?
Thanks for helping it was really helpful actually my teacher had accident so i was unable to understand them well thanks :)
1. To find the area of a triangle, we can use the formula: area = (base * height) / 2. Given that the height (altitude) is 7 cm and the base is 4 cm, we can substitute these values into the formula:
Area = (4 cm * 7 cm) / 2
= 28 cm² / 2
= 14 cm²
Therefore, the area of the triangle is 14 cm².
2. The supplementary angle of 84 degrees can be calculated by subtracting the given angle from 180 degrees. Supplementary angles add up to 180 degrees.
Supplementary angle = 180 degrees - 84 degrees
= 96 degrees
Therefore, the supplementary angle of 84 degrees is 96 degrees.
3. To find the total distance ran by the boy, we can use the formula: distance = perimeter * number of laps. Given that the rectangular field measures 35m by 25m, and the boy runs 12 laps, we can calculate the total distance:
Perimeter of the rectangular field = 2 * (length + width)
= 2 * (35m + 25m)
= 2 * 60m
= 120m
Total distance = perimeter * number of laps
= 120m * 12 laps
= 1440m
Therefore, the total distance the boy ran is 1440 meters.