7 + 7 = 14
and
14 + 1 = 15
so
8 + 7 = 15
hope it helps
The formula for surface area of a cone = 2pi rh
the radius of the base = 12inches
by the pythagoras theorem, 400 - 144 = 256 =16^2
therefore the height of the cone = 16inches
the surface area of the cone= 16 × 24pi
=384pi inches
please mark as brainliest
Answer:
1620 :B
Step-by-step explanation:
22/7×3×3×8.6=162.17
162.7 rounded off to the nearest tenth is
the 1620
Answer:
35 cm
Step-by-step explanation:
You can use the Cosine Rule to find the length of a side when two sides and the included angle are given.
a² = b² + c² - 2bc cos A
a² = (36²) + (52²) - 2(36)(52) cos 42°
a² = (1296) + (2704) - (3744)(0.7431448255)
a² = (4000) - (2782)
a² = 1218
a = ✓1218
a = 34.9 cm
