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Tpy6a [65]
3 years ago
12

Richard is asked to spray wash the exterior of a building that is shaped like a cube. The building has a side length of 7 meters

. How much surface area will Richard have to clean?
7 meters squared.
245 meters squared.
49 meters squared.
294 meters squared.
Mathematics
1 answer:
spayn [35]3 years ago
8 0

Answer:

294 meters squared

Step-by-step explanation:

Surface area of cube is calculated using the formula :

Surface area of cube = 6a²; where a = side length of the cube

The side length of the cube, a = 7 meters

Hence,

Surface area = 6 * 7² = 6 * 49

Surfave area of cube = 294 meters

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Help me with this thanks​
fredd [130]

Answer:

Volume of composite is 483  mm^3

Step-by-step explanation:

We need to add the volume of a rectangular prism (7 mm x 12 mm x 3 mm) to a semi-cylinder (of radius 3.5 mm and height 12 mm):

Volume of the prism = 7 x 12 x 3 mm^3  = 252 mm^3

Volume of the semi-cylinder =  \frac{\pi\,\,R^2\,\,H}{2}  =  \frac{\pi\,\,(3.5)^2\,\,(12)}{2} =230.907 \,\,mm^3

Therefore the sum of both volumes gives:

(252 + 230.907) mm^3 = 482.907  mm^3

WHich can be rounded to the nearest whole number as: 483 mm^3

4 0
3 years ago
Can some one help me please
kykrilka [37]

Answer:

The Domain is X, range is Y

Step-by-step explanation:

Domain and Range is just another term for X-axis and Y-axis

3 0
3 years ago
1.Solve for w.
iren [92.7K]
Hi there,

1) 
6 + (w - 10) = 5
6 + w - 10 = 5
- 4 + w = 5
w = 5 + 4

Hence, W = 9

2)
2/3 + y - 1/9 = 7/9
5/9 + y = 7/9
y= 7/9 - 5/9

Hence, Y = 2/9

4)
4x - 3/2x - 15/4 = 3/8
32x - 12x - 30 = 3
20x - 30 = 3
20x = 3 + 30
20x = 33

Hence, the answer is 33/20

5)
0.7(3s + 4) - 1.1s = 7.9
2.1s + 2.8 - 1.1 = 7.9
s + 2.8 = 7.9
s = 7.9 - 2.8

Hence, the answer is 5.1

Hope this all helps :)
8 0
3 years ago
Read 2 more answers
Elyse wants to buy a new softball glove that costs $45. She has $15 and plans to save 5 each week. How many weeks will it take h
almond37 [142]

Answer:

6 weeks :)

Step-by-step explanation:

it will take her 6 weeks

45-15 is 30.

30/5 is 6

8 0
2 years ago
Read 2 more answers
The opposite sides of a parallelogram have measures (2x+10) cin and (x+15)
xz_007 [3.2K]

Answer:

The measure of the sides is 20 cm.

Step-by-step explanation:

Opposite side of a parallelogram:

Opposite sides of a parallelogram are congruent, that is, they have the same measure.

Measures (2x+10) cm and (x+15) cm:

This means that:

2x + 10 = x + 15

2x - x = 15 - 10

x = 5

2x + 10 = 2*5 + 10 = 10 + 10 = 20

The measure of the sides is 20 cm.

6 0
3 years ago
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