Eas question
jenny's bedroom is 4m long, 3m wide and 2.7m high. it has a door that measures 2.1m *0.85m and a window that is 1.8m * 1.4m. calculate the cost of putting two coats of paint on the walls and ceiling if the paint costs $1.47 per metre squared

Step-by-step explanation:

4 × 3 = 12 m^2

12 × 2 = 24 = floor and ceiling

3 × 2.7 = 8.1

8.1 × 2 = 16.2

4 × 2.7 = 10.8

10.8 × 2 = 21.6

total = 24+16.2+21.6 = 61.8

door = 2.1×0.85 = 1.785 m^2

window = 1.8×1.4 = 2.52

total of door and window = 1.785+2.52 = 4.305

61.8-4.305 = 57.495 m^2

1.47 × 57.495 = £84.52 (2dp)

cost = £84.52

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )

27 + 13x + 15 = (x + 5)( =

step-by-step explanation:

27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( =