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Fill in the blanks please

Fill in the blanks please-example-1
User R Poon
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Explanation:

the base of the pyramid has an area of b × h = 10 in × 5 in = 50 in²

a triangular face with a base of

10 inches has an area of (b×h)/2 = (10in×5.6in)/2 = 28in²

a triangular face with a base of

5 inches has an area of (b×h)/2 = (5in×7.1in)/2 = 17.75in²

the total surface is the sum of the rectangle plus the four triangles

50in² + 28in² + 28in² + 17.75in² + 17.75in² = 141.50in²

User Tibbe
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