I need help please, For a test.

(1.2*5.8)+(3.6*.6)+(.8*5.8) = 15.8

Step-by-step explanation:

17.28 cm squared

Step-by-step explanation:

To start we can find the area of the whole rectangle

5.6*6.4=35.84

then we can take away the area in the middle, which to do we would need to find the other length of it

5.6-(1.2+.8)=3.2

then we can multiply the blank area

5.8*3.2=18.56

and then subtract it from the total area

35.84-18.56=17.28

17   x 256=4352

sorry if this is wrong, i'm new.

step-by-step explanation:

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°