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Vanyuwa [196]
4 years ago
5

Please help!! Question-The roof of a building is in the shape of a square pyramid 25 m on each side. If the slant height of the

pyramid is 18 m, how much will roofing material cost at $10.23 per sq m (Round to the nearest whole number)
Mathematics
1 answer:
Rudik [331]4 years ago
6 0

Answer:

\$9,207

Step-by-step explanation:

step 1

Find the lateral area

we know that

The lateral surface of a square pyramid is equal to the area of its four lateral triangular faces

so

LA=4[\frac{1}{2}bh]

where

b=25\ m

h=18\ m ----> slant height

substitute the values

LA=4[\frac{1}{2}(25)(18)]=900\ m^{2}

step 2

Find the cost

900(10.23)=\$9,207

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