The top question is B. 30, because you have to set 7y-30 equal to 4y+60 since both lengths are the same.
Answer: 27cm²
Step-by-step explanation:
lets take the width as x and length as 3x( since length is 3 times the width)…
Perimeter of the rectangle is 24 cm( 2*(l+b))= 2×(3x+x):24
2×4x=24
8x=24
X( width): 24/8=3cm
Length= 3x: 3*3=9cm
Area of the rectangle: ( l*w)= 9×3: 27cm²
0.8888888 = 8/9
2.8888888 = 26/9
-2.888888 = -26/9
Answer:
Step-by-step explanation:

= 105.57
= 105.6 cm²

According to given figure, The Triangle BDC is a right angled Triangle (Angle D = 90°)
So, we can apply Pythagoras theorem to find the Side a (Hypotenuse)
Now, let's solve ~
Therefore, Length of side a is 5 units ~