Plz Help!!

Evaluate. Multiply.
1. 1/2 (12)(6.7 + 8.3) 2. 1/2 (2.1)(1.1 + 5.7) =

Find the area of the figure.

3. A triangle with base 6 in. and height 5 in.

The area equals _ in.2.

1) 90

STEPS:  1/2 * 12 * (6.7 + 8.3)

6*(6.7+8.3)

6*15

90

2) 7.14

STEPS:  1/2 * 2.1 * (1.1 + 5.7)

1/2 * 2.1 * 6.8

2.1 * 3.4

7.14  

3) 15

STEPS:  area of triangle = 1/2 * base * height

1/2 * 6 * 5

3*5

15

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6