# Basic geometry

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these is another one the width of a rectangular picture is one half the length. the perimeter of the rectangle is 72inches.Find the length of the picture.
2L+2w=72
2L(1/2)+2w=72
2L(5)+2w=72
10L+2w=72
12L+72
L=72
L=12/72
L=6

If width is 1/2 the length, then w = 1/2L.

• Basic geometry - ,

Basic Geometry

1.

Find the perimeter of a rectangle 19 cm long by 27.8 cm wide.
22

2.

In triangle ABC, angle A = 47°, and angle B = 8°. Find angle C.35

3.

Find the perimeter of a triangle with sides of length 28 cm, 47 cm and 19 cm.
27

4.

In triangle FGH, angle F = 32°, and angle G = 100°. Find angle H.165

5.

Find the circumference of a circle whose radius is 27 in.

(use 3.14 for π).32.0

6.

Find the area of the trapezoid.63

7.

Find the area of a triangular piece of cloth that has a 18 cm base and is 24 cm high.43

8.

Find the area of a circle with a radius of 39 cm (use 3.14 for π).20

9.

Find the area of a rectangle 17 m by 13 m.13

10.

Find the area of the triangle with a base of 27 ft and height of 24 ft:

11.21

Find the volume of the box:

12.

Find the volume of a sphere with a 15 in. radius.10

13.

Find the volume of a cone that is 18 in. high and has a 6 in. radius.24

14.

Find the volume of a cylinder that is 15 in. high and has a 10 in. radius.2

15.

Find the volume of a box that is 12 feet long, 27 feet high and 3 feet wide.39