Answer:

Step-by-step explanation:

The volume and surface area of any prism can be determined using the given formula explained below.
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What is the Volume and Surface Area of Prisms?</h3>
The surface area of any given prism can be calculated using the formula, SA = (2 × Base Area) + (Base perimeter × height).
The volume of any given prism can be determined, using the formula, V = base area × height of the prism.
The image for the prisms to be calculated is missing, howver, using the above formula, the volume and surface area of any prism can be determined using the given parameters.
Learn more about volume and surface area of prisms on:
brainly.com/question/12186885
50 sqft = 45 min
495 sqft = x min
495/50 is 9.9. So we know we multiplied 50 by 9.9 to change it to 495.
Do the same on the other side. 45 x 9.9 = 445.5.
It will take him 445.5 minutes, or 7.425 hours
Answer:
100 percent increase
Step-by-step explanation:
1st garden
Length = 6 ft
Width = 4 ft
Perimeter = 2 (l+w)
= 2 (6+4) = 2(10) = 20
2nd garden
The length and width are 2 times the 1st garden
Length = 2 *6 = 12
Width = 2 *4 = 8
Perimeter = 2 (l+w)
= 2 (12+8) = 2(20) = 40
Percent change = (new - old )/old * 100 percent
The 1st garden is the old garden = 20 and the 2nd garden is the new garden = 40
Substituting in
Percent change = (40-20)/20 = 20/20 =100 *100 percent
= 100 percent increase