Question

Please help i been asking since yesterday

Calculate the perimeter of the triangle for problems

B. Calculate the area of the triangle for problems

Answer 1

1) 21.24cm

2)19.8ft

3)22.84mm [2.284cm]

Explanation:

To calculate the perimeter of a triangle, add the length of its sides.

1) perimeter = 5.4+8.84+7

=> 5.4+8.84+7 = 21.24,

21.24cm

2) perimeter = 6.6 + 6.6 + 6.6 i.e 6.6* 3

=> 6.6 x 3 = 19.8

19.8ft

3) perimeter = 8.3 + 4.9 + 9.64

=> 8.3 + 4.9 + 9.64 = 22.84

22.84mm or 2.284cm

AREA

1) it's a right triangle,

=> Area of a right triangle = 1/2 × base × height.

=> here, base is a and height is b

=> a = 7, b = 5.4

=> now we multiply it,

=> 7*5.4 = 37.8

=> now multiply it with 1/2,

=> 1/2 x 37.8 = 37.8/2

=> 37.8/2 = 18.9

2) it's an equilateral triangle,

18.8620

the formula is √3 a^2/ 4

=> √3* 6.6^2/ 4

=> 75.4481/4 = 18.8620

3) 20.335

base = a = 8.3

height = b = 4.9

=> 8.3 * 4.9 = 40.68

=> 40.68/2 = 20.335

hope this helps:)

Answer 2

To calculate the perimeter of a triangle, add the length of its sides. For example, if a triangle has sides a, b, and c, then the perimeter of that triangle will be P = a + b + c.