Answer:
Step-by-step explanation:
4.5x=90
x=20 history
28 chemistry
42 math
They add to 90.
History test=x
Chemistry test=1.4x
Math test=(1.5)(1.4)=2.1x
They add to 90
Answer:
circumference=50.24 cm
area=200.96 cm²
Step-by-step explanation:
r=16/2=8
circumference=2πr=2×3.14×8=50.24 cm
area=πr^2=3.14×8²=200.96 cm²
Answer:
c
Step-by-step explanation:
True
Lengths are preserved during a reflection, meaning it is rigid.
we know that
The surface area of a cube is equal to

where
A is the area of one face of the cube
in this problem

Find the surface area

therefore
<u>the answer is</u>
of wrapping paper is needed to cover the box completely