Explanation

Given:

Radius (r) = 13 cm

Distance from center to chord (d) = 5 cm

Let's draw a perpendicular from the center to the chord. This will bisect the chord.

Using the Pythagorean theorem:

r² = d² + (half chord)²

13² = 5² + (half chord)²

169 = 25 + (half chord)²

(half chord)² = 169 - 25

= 144

half chord = √144

= 12 cm

Length of chord = 2 × half chord

= 2 × 12

= 24 cm

Explanation

Evaluation helps assess effectiveness in teaching and learning by analyzing outcomes and performance.

It provides a basis for discussing success, failure, quality, and areas for improvement in educational processes.

Explanation

"Frightened" describes the puppy, so it is an adjective.

"Puppy" is a noun, and "looked" is a verb.

Explanation

Al-Hawi by Muhammad bin Zakriya Al-Razi is a comprehensive medical encyclopedia.

It compiled significant medical knowledge from both Greek and Arab sources.

Explanation

The sentence is in the simple past tense ("He composed").

The passive form uses "was" + past participle ("composed").

So, "A beautiful song was composed by him." is the correct passive voice.

Explanation

A telephone line supports full-duplex transmission, meaning both parties can talk and listen simultaneously.

Unlike half-duplex (e.g., walkie-talkie).

Full-duplex allows two-way communication at the same time.

Explanation

Explanation

This test is harder than the last one.

"Harder" is the correct comparative form of "hard" to compare two things.

Explanation

When a grain of sand enters an oyster's body, the oyster secretes layers of nacre (mother of pearl) around the irritant.

Over time, these layers build up and form a pearl.

Explanation

Perception in the psychomotor domain involves the ability to observe and interpret environmental stimuli that may require a physical response or movement for adjustment.

It is the first level of skill development in the psychomotor domain, where individuals recognize the need for a movement based on sensory input.