Answer:
30
Step-by-step explanation:
solving
9 + 12 + 9
Answer: it’s the first one.
Step-by-step explanation:
Answer:
4t+6
Step-by-step explanation:
To find the perimeter of the rectangle you add the length of the sides.
Perimeter= t+ t+ t+ 3+ t+ 3= <u>4t+6</u>
or
Perimeter=2(t)+ 2(t+3)= 2t+ 2t+ 6= <u>4t+6</u>
Answer:
BD = √97 cm ≈ 9.849 cm
Step-by-step explanation:
Diagonal BD of rectangle ABCD is the hypotenuse of right triangle ABD. Opposite sides of the rectangle are the same length, so we have ...
AB = 4 cm
AD = 9 cm
The sides are related to the diagonals by the Pythagorean theorem.
<h3>Pythagorean theorem</h3>
The Pythagorean theorem tells you the relation between sides and hypotenuse of a right triangle:
AB² +AD² = BD²
4² +9² = BD² = 16 +81 . . . . . evaluating the squares
BD = √97 . . . . . take the square root
The length of BD is √97 cm, about 9.849 cm.
