The answer is A‼️the first one
Answer is 11 or 11 squared
Answer:
18 inches
Step-by-step explanation:
Volume of a pyramid is:
V = ⅓ Ah
where A is the area of the base, and h is the height of the pyramid.
The base is a rectangle. Area of a rectangle is width times length, so:
V = ⅓ wlh
Plugging in values and solving:
1512 = ⅓ w (21) (12)
w = 18
The width of the base is 18 inches.
The first, second, fourth, and fifth statements are true. The third statement is false because polygons can have congruent sides but noncongruent angles, and this is easiest to exemplify using a rhombus, a four-sided figure with identical side lengths but different angle measures.
