When a number is decreased by 3%, the result is 80. What is the original number to the nearest tenth?
1 answer:
You might be interested in
Use sine, cosine or tangent of your calculator.
e.g. Q.7
e.g. Q.7
Answer:
1) D.208
2) C.112
Step-by-step explanation:
so basically for 1 you solve the area for all the shapes you see in the net using the equation l*w=a and add them together
l= length
w=width
a=area
4*8=32
4*8=32
6*4=24
6*4=24
6*8=48
6*8=48
48+48+24+24+32+32=208
208
for number 2 since it's lateral surface area, you wanna find the area of all the shape in the net except for the square in the middle.
for the triangles you're gonna wanna use the equation 1/2b*h=a
b= base
h=height
a=area
7*4=28
7*4=28
7*4=28
7*4=28
28*4=112
Answer: A. 76 sq. units
Step-by-step explanation:
1. You can use the following formula for calcualte the area of the parallelogram:
Where is the base and
is the height of the parallelogram
and
2. The formula for calculate the area of a rectangle is:
Where is the base and
is the height of the rectanngle.
and
3. Then, the area of the figure is the sum of the area of the parallelogram and the area of the rectangle: