smith4kaay
02.08.2019 •
Mathematics
Kiana wants to cover a triangular area of her background with red, concrete patio stones. each stone costs $0.42 and covers 29.26 square inches. if the triangular area has a height of 8 feet and a width of 6 feet, what is the minimum number of stones that kiana should buy to cover the triangular area in her backyard? show your work.
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Ответ:
1 in²=0.00694 ft², then:
29.26x0.00694= 0.20 ft²
2. The triangular area has the following surface:
A=bxh/2
A=(6 ft)(8 ft)/2
A=24.0 ft²
3. Finally, the number of stones (N) that cover the triangular area is:
N= 24.0 ft²/0.20 ft²
N=120 stones
Kiana should buy 120 stones to cover the triangular area in her backyard.
Ответ:
360 miles
Step-by-step explanation:
Step 1: 120 miles*3 hours
Step 2: 360 miles far.