Answer:
Option D is correct.
Step-by-step explanation:
We are given with a solid figure with cuboid in base and square based pyramid in top.
we have to find Surface of the figure.
Surface Area = Curved surface ares of cuboid + area of base of cuboid + lateral surface area of pyramid.
Length of the cuboid, l = 8 cm
width of the cuboid , w = 8 cm
height of the cuboid , h = 11 cm
Lateral surface area of pyramid = 4 × Area of a triangle
Base of triangle , b = length of cuboid = 8 cm
Height of the triangle ,H = 8 cm
Surface Area = 2 × h × ( l+w ) + l × b + 4 × 1/2 × b × H
= 2 × 11 × ( 8 + 8 ) + 8 × 8 + 2 × 8 × 8
= 22 × 16 + 64 + 128
= 352 + 192
= 544 cm²
Therefore, Option D is correct.
Answer:
36 units
Step-by-step explanation:
there is 12 units at is base and 9 as its height
you have to use the Pythagorean theorem to find the hypotenuse
c= √(a^2+b^2)( be being 12 and a 9)
plug it in and get c=√(81+144)=√225=15
perimeter is a+b+c
now that we have c do 12+15+9
=36
Answer:
The price before tax was $110
Step-by-step explanation:
Here the price paid totals $129.25, including b (the pre-tax price) an 17.5% of b: b + 0.175b = $129.25. Combining the b terms, we get:
1.175b = $129.25. Solving for b by dividing both sides by 1.175, we get
b = $110. The price before tax was $110.
Amy: (3 pages/min)(x min) + 9 pages
Sam: (2 pages/min)(x min) + 47 pages
Equate these: 3x+9 = 2x + 47
Then x = 38. The two friends will have covered the same number of pages after 38 minutes. How many pages would that be? 3(38)+9 = 123 pages.
Graph C because it’s rate of change remains steadily constant as it decreases.