Answer:
Total surface area of cube = 294 cm²
Step-by-step explanation:
Given:
Perimeter of cube = 84 cm
Find:
Total surface area of cube
Computation:
Perimeter of cube = 12 x side
84 = 12 x side
Side = 7 cm
Total surface area of cube = 6(a)²
Total surface area of cube = 6(7)²
Total surface area of cube = 294 cm²
Tzw uzv in the diagram bellow is a rectangle
Answer:
5C 6D
Step-by-step explanation:
5, a^2 = b^2 + c^2
6,
A is wrong because two distinct lines intersect at 1 point only or 0 (they will never intersect when they are parallel)
B & C are wrong because lines contain infinite point
E is wrong because 2 parallel lines will never intersect, as the result, their common points = 0
Answer:
D
Step-by-step explanation:
(-7x^2 - 3) + (4x - 6)
-3 - 6 = -9
-7x^2 + 4x - 9
Add the 3 fractions together.
Mixed fractions: 5 3/4 + 2 2/3 + 10 1/6
Convert to improper fractions and then add. Or simply use a calculator.
Total = 223/12 = 18 7/12
