Answer:
7
Step-by-step explanation:
7.base of triangle=√(32.5²-28²)
=√4.5(32.5+28)
=√4.5(60.5)
=√272.25
=16.5
area of triangle=1/2 ×16.5×28
=231
volume=231×31=7161 km³
8.
39.4-25=14.4
width=√(30.6²-14.4²)
=√16.2(30.6+14.4)
=√16.2(45)
=√729
=27
volume=(25+39.4)/2 ×27×35
=(64.4)/2×27×35
=32.2×27×35
=30429 cm³
Answer:
Option B. The Lateral area is 692 cm2
Step-by-step explanation:
<u>Verify each statement</u>
case A) The area of the base is 384 cm2
The statement is False
Because
The area of the base is
case B) The Lateral area is 692 cm2
The statement is True
Because
we know that
The lateral area is equal to the area of its three triangular lateral faces
so
case C) The surface area is 740 cm2
The statement is False
we know that
The surface area is equal to the lateral area plus the area of the base
so
we have
substitute
case D) The area of each congruent face is 264 cm2
The statement is False
The area of each congruent face is equal to
Answer:
1<x≤3
Step-by-step explanation:
Answer:
200 pages
Step-by-step explanation:
( number of pages) ×(2/5) = 80
Number of pages = 80 ÷(2/5)
Number of pages = 200