Surface area of the pyramid= 4*(area of the triangle) + area of the square
Area of the triangle = (1/2)*base*height=(1/2)*5*5= 25/2 in²
Area of the square = 5*5 =25 in²
Surface area of the pyramid = 4*(25/2) + 25=2*25 + 25=75 in²
Answer:
24
Step-by-step explanation:
This is the same question as before just flipped around
Answer:
- 10.7 liters of paint required
Step-by-step explanation:
Dimensions of the room
- 7.7 m by 14.8 m with the height of 2.4 m
Find the surface area of the 4 walls
- A = Ph = 2(l + w)h = 2(7.7 + 14.8)*2.4 = 108 m²
Convert the area to ft²
- 108 m² = 108*10.7639 ft² = 1162.5012 ft²
Find the amount of paint required
- 1162.5012/410 = 2.84 gal (rounded)
Covert the volume to liters
- 2.84 gal = 2.84*3.76 l = 10.7 l (rounded)
