6x15= 90
9x20= 180
180+90= 270
270 - 25 = 245 dane has 245 stamps left
<span>4(a^2 + 2b) - 2b
= 4a^2 + 8b - 2b
=</span> 4a^2 + 6b
The answer is 25m.
Height = 15
Length = 25
Height+lengthx2= 80(perimeter)
Height x length=375m2(area)
Triangles ABC and DEF may or may not be congruent, because the angle-angle-angle (AAA) postulate is not a criterion for congruency of any two triangles. This is because the angle-angle-angle postulate only incorporates the angles of the triangles, and the side lengths are not specified, so congruency may or may not be true for these triangles.
Answer:
Part a) The area of the base is 
Part b) The area of the base is 
Step-by-step explanation:
we know that
The area of a rectangle is equal to

Part a)
we have


substitute

Part b)
we know that

Convert inches to feet


substitute in the formula

Convert to mixed number
