The first and second one
(7x2)=14+5=19
(28/2)=14+5=19
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Answer:
26 cm
Step-by-step explanation:
we can make an equation to find the lengths
2(x+7x-2) = 60
x : length of width
7x-2 : the length of length
2 : the two pairs of length and width
solving this equation, we get x = 4
but that is not the answer
we have to plug in x=4 into 7x-2
7*4-2 = 28-2 = 26
Answer:
72 cm3
Step-by-step explanation:
area of triangle is 1/2 base x height
1/2 (3 x 4) = 6
6 x 12 (height) = 72
Answer:
400 cm²
Step-by-step explanation:
Triangles: 1/2x15x8=60 (two of those)
Base: 8x7=56
Back: 15x7=105
Sloped side: 7x17=119
60+60+56+105+119=400 cm²
