Using the formula for the surface area of a rectangular prism, the surface area of the composite solid is: C. 162m²
<h3>What is the Surface Area of a Rectangular Prism?</h3>
Surface area of a rectangular prism = 2(wl+hl+hw)
Surface area of the composite shape = surface area of the larger prism + surface area of the smaller prism - area of the face both prisms are joined together
Surface area of the larger prism = 2(wl+hl+hw) = 2(2×3 + 9×3 + 9×2) = 102 m²
Surface area of the smaller prism = 2(wl+hl+hw) = 2(2×8 + 2×8 + 2×2) = 72 m²
Area of the face both prisms are joined together = 2(l×w) = 2(3 × 2) = 6 m²
Surface area of the composite shape = (102 + 72) - 12 = 162m²
Learn more about surface area of rectangular prism on:
brainly.com/question/1310421
#SPJ4
Answer:
-4w^2- 8w
Step-by-step explanation:
-4w(w+2), use distributive property, (-4w x w)+(-4w x 2)= (-4w^2)+-8w
The sample relative risk is 10.
<h3>
What is relative risk? </h3>
Sample relative risk is the ratio of disease risk or death in an exposed group to the disease risk or death in an unexposed group. Sample relative risk is a descriptive statistic.
What is the sample relative risk?
Sample relative risk = fraction of coal miner who got lung cancer / fraction of non coal miners who got lung cancer
Sample relative risk = (30 / 150) ÷ (5/250)
(1/5) ÷ (1/50
1/5 x 50 = 10
To learn more about sample, please check: brainly.com/question/18521835
1m=100cm
1.6m=160cm
160-10=150
He was 150cm one year ago