Answer:
142 3/8
Step-by-step explanation:
45 + 42 = 87
87 + 54 = 141
7/8 + 3/8 = 1 2/8
1 + 141 = 142
2/8 + 1/8 = 3/8
Answer:
9m^3
Step-by-step explanation:
Seperate the shape to two shapes. Two rectangles.
Volume of the bottom rectangle:3X2X1=6
Volume of the top rectangle:1X1.5X2=3
6+3=9
Answer:
1/4x9=9/4 2 1/4, 2.25, (3/2)2
Step-by-step explanation:
The answer is 9/4 when you multiply it. But it can also be simplified as one of the answers here I wrote above.
Take into account that the formula for the area of a triangle is:
A = b·h/2
where b is the base, h is the height h = 7.2 cm and A is the area A = 28.8 cm²
Solve for b in the previous formula, and replace the values of A and h, as follow:
b = 2·A/h
b = 2(28.8 cm²)/(7.2 cm)
b = 8 cm
Hence, the length of the base of the triangle is 8 cm