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How do u do this pls someone help me I’ve failed math for 3 quarters straight

How do u do this pls someone help me I’ve failed math for 3 quarters straight-example-1
User Theo Walton
by
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1 Answer

11 votes
11 votes

Answer:

1. 84in³

2. 180cm³

3. 600ft³

4. 360cm³

5. 312cm³

6. 15.6kg

7. 1.95kg

Explanation:

1: V = Bh = (7x3)x4 = 84in³

2: V = Bh = 1/2(8x5) x 9

= 20 x 9

= 180cm³

3: V = Bh = 1/2(b1+b2) h x 5

= 1/2(20+10) 8 x 5

= 15 x 8 x 5

= 15 x 40

= 600ft³

4: V = Bh = 1/2 (4x9) x 20

= 18 x 20

= 360cm³

5: Total volume = Volume of rectangular prism + Volume of triangular block

= (8.5 x 4 x 9) + 1/2(1.5 x 2) x 4

= 306 + 6

= 312cm³

6: divide 312cm³ by 20kg/cm³ to get the approx. mass:

312/20 = 15.6kg

7: first find the volume of the friends Display:

= (4.25 x 2 x 4.5) + 1/2(0.75 x 1) x 2

= 38.25 + 0.75

= 39cm³

Now divide by 20 to find the approx. weight of the friends display:

39/20 = 1.95kg

Have a nice day! :)

User Amr Osama
by
2.8k points
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