The base of a pyramid is a rectangle with a length of 3 centimeters
and a width of 6 centimeters. If the height of the pyramid is 12
centimeters, what is the volume of the pyramid?
Select one:
720 cubic centimeters
72 cubic centimeters
21.6 cubic centimeters
216 cubic centimeters

72 cubic centimeters

Step-by-step explanation:

Volume for a pyramid is lwh/3

Length = 3

Width = 6

Height = 12

3 x 6 x 12 = 216/3 = 72

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°

this answer is !