Answer:
$255
Step-by-step explanation:
As, the area of the pool bottom = length x breath
= 20 x 15 = 300 square foot
So for painting
Per square foot = $0.85
So for 300 square foot = $0.85 x 300
= $255
Answer: D) 40%
==========================================================
Work Shown:
Area of purple rectangle (ignore circular cutout for now) = base*height = 6*12 = 72
I'm assuming the center of the circle is located on the right edge of the purple rectangle. If so, then we can subtract off half the circle's area from the purple rectangle area
Semicircle Area = (pi*r^2)/2 = (pi*3^2)/2 = 14.1371669
Area of purple region = (Rectangle Area) - (Semicircle Area)
Area of purple region = 72-14.1371669
Area of purple region = 57.8628331
-------
Now divide this area by 144 as this is the total area of the entire largest square (12 by 12 square) to get 57.8628331/144 = 0.401825 which is approximate. This rounds to 0.40 and converts to 40% which explains how I got choice D as the answer
2 is the answer because you have to multiply the x times the [t]
Answer:
1). Surface area of the prism = 112 cm²
2). Area of the sphere = 615.8 cm²
Step-by-step explanation:
1). Surface area of the triangular prism = Area of the triangular bases + Area of three lateral (rectangular) sides
Area of a triangular base =
=
= 10.5 cm²
Area of a rectangle = Length × width
Area of the rectangular lateral sides = (3 × 5) + (8 × 5) + (7 × 5)
= 15 + 40 + 35
= 90 cm²
Surface area of the prism = (2 × 10.5) + 90
= 21 + 90
= 112 cm²
2). Surface area of the sphere = 4πr²
= 4π(7)²
= 615.75
≈ 615.8 cm²
Choice D!! If you’re confused the vertex is the turning point, which just so happens to be an x intercept. Knowing that you can write your equation. It bounces so it’s (X+1)^2 expand it distribute everything then distribute a negative in last bc it opens down hope this helps let me know if u have questions