To find the area of a triangle, use the formula a=(1/2)bh. a = area b = base h = height So using the measurements in the picture... b = 7.9 h = 5.9 Now using the measurement ^ to fill in the formula. a=(1/2) 7.9 * 5.9 Now multiply the numbers to find a. a=(1/2) 7.9 * 5.9 a= 3.95 * 5.9 a = 23.305 The area is 23.305 mm.
To find the perimeter, add up all the sides. 7.9 + 5.9 + 9.86 13.8 + 9.86 23.66 The perimeter is 23.66 mm.
The type of triangle is a right triangle because one of the angles is a right angle (90 degrees).
First you need to divide 64 by 75 and then multiply by 100 which is 85.3% which then you need to find the average of the 2 which will be (85.3+x)/2=88 where x= the value of the second test.
Then you will need to isolate the x with the following steps:
